The historical figure known for their contributions to civil rights and social justice is Martin Luther King Jr. His advocacy against racial segregation and discrimination through non-violent protest became a cornerstone of the civil rights movement in the United States. King's famous speeches, particularly "I Have a Dream," inspired countless individuals to join the fight for equality. His promotion of peaceful resistance against inequality led to significant legislative changes, including the Civil Rights Act of 1964. King's vision and persistence have left an indelible mark on the struggle for social justice globally, inspiring future generations to continue the fight.