Trump Denounces Anti-Semitism or Racism

The Republican Party has not just unequivocally denounced Donald Trump for doing this. What kind of evidence do they need before they denounce this kind of open bigotry and bias? That's what concerns me. The fact that this guy could say I admire Donald Trump and he's a neo-Nazi, why did he admire Donald Trump? And I want to bring him back to the 2016. So who was the 2016 Donald Trump in this guy's mind?