How did student activists oppose segregation and injustice in selma? what risk did they take?

The student activist opposed segregation and injustice by going to places where American African were not allowed. The places were public parks, movie theater, and so on. These acts were non-violence without creating any damage but to give a message to the World and to the Americans to fight for their cause.  They also risked themselves getting hurt by the Whites and the police.