Russell Simmons is apologizing after coming under fire for a video that appeared on his new All Def Digital YouTube channel.

The "Harriet Tubman Sex Tape" depicts an actress portraying the famous abolitionist having sex with her "Massa" in order to allow her to run the Underground Railroad. The video has since been taken down. Simmons issued an apology on Globalgrind.com in which he says he was contacted by his "buddies" at the NAACP asking for removal of the video....