Mike Epps got a lesson in racism — the comic actor got blasted on social media for posting a photo of a black man whipping white slaves. Epps posted the pic on Instagram and Facebook late Thursday night — and the cotton field scene also included an image of Dr. Martin Luther King Jr. floating above … and smiling. Epps captioned the image, “I am so proud of you bro! Lol.” Epps quickly took down the image, but not before getting an earful from angry fans.