what were african americans acting out when they joined a protest movement because it was harder for them to vote than it was for white americans?

The African Americans were acting out their aggression in order to secure their civil rights which were available for the white Americans easily.

Explanation:

The discrimination that was prevalent against African Americans caused their anger to ascend so much that they chose to showcase their anger through aggression against the system that was predominantly inclined towards the white people. Most African Americans joined the protests that demanded equal rights and justified treatment for themselves. Many African Americans and also some white people lost their lives during the struggle of securing equal rights for the blacks.