The Aga Khan, spiritual leader of Ismaili Muslims and a philanthropist, dies at 88

The Aga Khan addresses an audience about the challenges to a pluralistic society on Nov. 12, 2015, at the Memorial Church on the campus of Harvard University, in Cambridge, Mass.

Considered by followers to be a direct descendant of the Prophet Muhammad, His Highness Prince Karim Aga Khan IV was a student when his grandfather picked him to lead the Shia Ismaili Muslim diaspora.

(Image credit: Steven Senne)