OSTRITZ, GERMANY - APRIL 21: Police officers enter a gate tothe "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: Participants are escorted by police officer as they arrive for the "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: Police carry water and food supply as they are deployed for the "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: Participants arrive for the "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: A police prepares his protective gear nearby "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: Police searches a participant as he arrives for the "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: Participants arrive for the "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: Participants arrive for the "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: Police are accompanied by city residents are seen as participants arrive for the "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: Participants arrive for the "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency

OSTRITZ, GERMANY - APRIL 21: Participants are escorted by police officer as they arrive for the "Shield and Sword neo-Nazi festival" at Neisseblick hotel in Ostritz, Germany on April 21, 2018. The Neo Nazis are attending the so called Schild und Schwert Festival (Festival of Shield and Sword) on Adolf Hitler's birthday. Lukas Kabon / Anadolu Agency