Photographer Devin Allen is proof that art is a necessary vehicle for social change. His award-winning photography, taken on the frontlines of protests in America, namely in his hometown of Baltimore, have graced the covers of Time magazine and shown the world the reality of living in American cities. The Gordon Parks fellow talks to Salon's D. Watkins about his second book, "No Justice, No Peace," a collection of his photojournalism documenting social justice and resistance movements led by Black activists. Allen's advice for artists is simple: "Go out, create, find your lane, and just grind."