BRUSSELS, BELGIUM - MAY 12 : A security force member is seen as environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : An environmentalist wearing a hat with animals under a banner reading "Help" takes part in a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists carry a banner during a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : An environmentalist wearing the hat of Statue of Liberty holds a banner reading "No Iran War" during a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change outside Berlaymont building in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : An environmentalist wearing a costume takes part in a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : An environmentalist wearing a monkey mask holds a banner reading "Smart Monkeys Fight Global Warming" during a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists hold banners during a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Blindfolded statue of Lady Justice holding scales is seen as environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change outside Berlaymont building in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists ride bicycles during a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : An environmentalist with a "knife through head" costume takes part in a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : An environmentalist holds a banner during a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change outside Berlaymont building in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists stage a demonstration to draw attention to global warming and climate change outside Berlaymont building in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM

BRUSSELS, BELGIUM - MAY 12 : Environmentalists ride bicycles during a demonstration to draw attention to global warming and climate change in Brussels, Belgium on May 12, 2019. Demonstrators gathered at Brussels-North railway station and marched to Cinquantenaire (50th Anniversary) Park. Dursun Aydemir / Anadolu Agency/ABACAPRESS.COM