Mary Trump on her Donald Trump’s racist rhetoric: ‘It’s not just ridiculous, it’s dangerous’

After Donald Trump claimed he was the least racist person in the debate hall during the campaign’s final debate, his niece Mary Trump says “the only people who say things like that are always the most racist person in the room.” She tells Lawrence O’Donnell despite Donald Trump’s denials, there are “a lot of incredibly racist people in this country who understand that Donald has their backs.”