Bloody Sunday refers to the brutal events that occurred on March 7, 1965, in Selma, Alabama. Civil rights activists, including many African Americans, organized a peaceful march from Selma to the state capital of Montgomery to demand the right to vote without facing discrimination and violence.

As they attempted to cross the Edmund Pettus Bridge, they were met by a line of Alabama state troopers and local police who brutally attacked them with clubs and tear gas in what became known as "Bloody Sunday." The violent incident was broadcast on television and shocked the nation, leading to widespread condemnation and increased support for the Civil Rights Movement.

Bloody Sunday ultimately galvanized support for the passage of the Voting Rights Act of 1965, which aimed to eliminate discriminatory voting practices that prevented African Americans from exercising their right to vote. The courageous actions of the activists on Bloody Sunday played a pivotal role in advancing civil rights and racial equality in America.