March 7, 1965, became known as “Bloody Sunday,” the emotional climax of a movement that later that summer led to the landmark Voting Rights Act. “It is hard for us to comprehend,” said Evelyn Brooks Higginbotham, chair of Harvard’s Department of African and African American Studies. Co-sponsoring the event was W.E.B. Du Bois Institute for African and African American Research. Henry Louis Gates Jr. (right) is its director.