Pres. Barack Obama and Amelia Boynton Robinson

Pres. Barack Obama greets pioneering civil rights activist Amelia Boynton Robinson at the 50th-anniversary commemoration of the Selma to Montgomery march on March 8, 2015. Robinson, a home-demonstration agent for the U.S. Department of Agriculture in Dallas County, was one of the primary organizers of the original event.

Photo courtesy of the White House