I hate to break it to Isaiah, but it's funny that he's playing the race card when there are still 2 Black characters on the show. Neither one of them seems to be in danger of being fired or seems to cause trouble on the set. So yeah, Isaiah, go on believing what you want...it's not working....
PS: Someone correct me if I'm wrong, but isn't Shonda Rhimes (Grey's Anatomy's creator) Black? Because yeah, she's really going to make people believe she's a racist
