Tupac Shakur — who was killed at 25 in 1996 — would have turned 52 this year. His mother, Afeni Shakur, was an activist and a central figure in the Black Panthers. Author and historian Santi Elijah Holley's new book, An Amerikan Family, follows the Shakur family tree and their work in the Black Liberation Movement.John Powers reviews the final season of the British detective series Endeavour.