Why did the civil rights movement accelerate after world war 2?

African Americans were allowed to fight for the allies and gained recognition as well as respect for how well they excelled on the battlefield. They found that things remained the same when they returned home. They knew it was time to collect on the lives, injuries, and limbs they had invested in the war and seek what was really their right such as to vote, true equality; the right to the same education as all Americans.
Women had filled men's roles in the workplace during the war while the men went to fight the battles.