10 December 2018, Mexico, Tijuana: Activists who demonstrated on the border between the USA and Mexico against US migration policy are arrested by US security forces. Since October thousands of people, mainly from Central America, have walked in so-called caravans to the North Mexican border to seek asylum in the USA. In Tijuana alone, the Mexican border town to the southern Californian San Diego, more than 4700 migrants await at the moment. Photo: Omar Martнnez/dpa

10 December 2018, Mexico, Tijuana: Activists who demonstrated on the border between the USA and Mexico against US migration policy are arrested by US security forces. Since October thousands of people, mainly from Central America, have walked in so-called caravans to the North Mexican border to seek asylum in the USA. In Tijuana alone, the Mexican border town to the southern Californian San Diego, more than 4700 migrants await at the moment. Photo: Omar Martнnez/dpa

10 December 2018, Mexico, Tijuana: Activists who demonstrated on the border between the USA and Mexico against US migration policy are arrested by US security forces. Since October thousands of people, mainly from Central America, have walked in so-called caravans to the North Mexican border to seek asylum in the USA. In Tijuana alone, the Mexican border town to the southern Californian San Diego, more than 4700 migrants await at the moment. Photo: Omar Martнnez/dpa

10 December 2018, Mexico, Tijuana: Activists demonstrate on Imperial Beach on the border between the USA and Mexico against US migration policy. According to the organizers, the demonstrators knelt down in an "act of non-violent civil disobedience" before the border guards. During the "prayer protest" several demonstrators were arrested. Since October thousands of people, mainly from Central America, have walked in so-called caravans to the North Mexican border to seek asylum in the USA. In Tijuana alone, the Mexican border town to the southern Californian San Diego, more than 4700 migrants await at the moment. Photo: Omar Martнnez/dpa

10 December 2018, Mexico, Tijuana: Activists demonstrate on Imperial Beach on the border between the USA and Mexico against US migration policy. According to the organizers, the demonstrators knelt down in an "act of non-violent civil disobedience" before the border guards. During the "prayer protest" several demonstrators were arrested. Since October thousands of people, mainly from Central America, have walked in so-called caravans to the North Mexican border to seek asylum in the USA. In Tijuana alone, the Mexican border town to the southern Californian San Diego, more than 4700 migrants await at the moment. Photo: Omar Martнnez/dpa

10 December 2018, Mexico, Tijuana: "No cages, no wall" is written on the posters of demonstrators protesting against US migration policy on the border between Mexico and the USA. Several demonstrators were arrested during the protest. Since October thousands of people, mainly from Central America, have walked in so-called caravans to the North Mexican border to seek asylum in the USA. In Tijuana alone, the Mexican border town to the southern Californian San Diego, more than 4700 migrants await at the moment. Photo: Omar Martнnez/dpa

10 December 2018, Mexico, Tijuana: US security forces guard the border fence between Mexico and the USA during a protest against US migration policy. Since October thousands of people, mainly from Central America, have walked in so-called caravans to the North Mexican border to seek asylum in the USA. In Tijuana alone, the Mexican border town to the southern Californian San Diego, more than 4700 migrants await at the moment. Photo: Omar Martнnez/dpa