Just a few people got this one right. This is American civil rights activist Bayard Rustin. From Wikipedia: Rustin was an African American leader in social movements for civil rights, socialism, nonviolence, and gay rights.
Rustin worked with A. Philip Randolph on the March on Washington Movement, in 1941, to press for an end to racial discrimination in employment. Rustin later organized Freedom Rides, and helped to organize the Southern Christian Leadership Conference . . .