Which civil rights leader was born in Atlanta in 1929?

The civil rights leader born in Atlanta in 1929 is Martin Luther King, Jr. His significant contributions to the civil rights movement in the United States, particularly through nonviolent protest and advocacy for racial equality, marked him as a pivotal figure in American history. King played a crucial role in organizing events such as the Montgomery Bus Boycott and the March on Washington, where he delivered his famous "I Have a Dream" speech. His leadership helped to inspire widespread activism and resulted in landmark legislation aimed at dismantling racial segregation and discrimination, including the Civil Rights Act of 1964 and the Voting Rights Act of 1965.

The other leaders listed, while also impactful in the civil rights movement, were not born in Atlanta nor in 1929. Malcolm X was born in Omaha, Nebraska; Rosa Parks was born in Tuskegee, Alabama; and Thurgood Marshall was born in Baltimore, Maryland. Each of these individuals has played an essential role in advancing civil rights and social justice, but their birthplaces and dates do not match the specifics of the question.