African-American Fox News staffers find it “very difficult” to work at the network, former president of the National Association of Black Journalists Bob Butler told TheWrap on Thursday. “I’ve talked to some folks who work there and it’s very difficult, especially when you have all the hit pieces that are done on Obama,” Butler said. His comments come as Rupert Murdoch continues to face criticism over a controversial tweet on Wednesday that insinuated President Obama isn’t “a real black president.” Murdoch apologized on Thursday.