Bloody Sunday in Black history refers to an event that took place on March 7, 1965, in Selma, Alabama. Civil rights activists, including many Black citizens, were marching from Selma to Montgomery to protest the denial of voting rights for African Americans. As they crossed the Edmund Pettus Bridge, they were met by Alabama state troopers and local law enforcement officers who violently attacked the peaceful demonstrators with clubs, whips, and tear gas.

The brutal assault against the marchers, which was televised and broadcasted nationwide, shocked the American public and galvanized support for the civil rights movement. The event came to be known as Bloody Sunday due to the excessive force used against the peaceful protesters, many of whom were severely injured.

Bloody Sunday ultimately led to increased national attention on the issue of voting rights and played a significant role in the passage of the Voting Rights Act of 1965, which aimed to overcome legal barriers at the state and local levels that prevented African Americans from exercising their right to vote. The courage and resilience shown by the activists on Bloody Sunday are remembered as a pivotal moment in the struggle for racial equality and justice in America.