DuVernay, LL Cool J to receive Harvard W.E.B. Du Bois medals

"Selma" director Ava DuVernay and rapper LL Cool J are among the recipients of Harvard University's 2017 W.E.B. Du Bois medals honoring those who have made significant contributions to African and African-American history and culture.The school announced Monday that they will be honored at the fifth-annual Hutchins Center Honors on Oct. 4 in Cambridge, Massachusetts.Other medalists this year include Democratic political strategist Donna Brazile, artist Kara Walker, Microsoft Chairman John Thomps