Power 50: Darren Walker

Raised in rural Texas as the son of a single mother, Walker has transcended his humble beginnings to lead one of the most venerable philanthropic institutions, with billions in assets. Since taking the reins in 2013, he's steered the organization in a new direction and recommitted it to social justice, helping save Detroit with a reported $125 million grant and championing "the right of every person on this planet to live with dignity."

SLIDESHOW | Out's 9th Annual Power List