Republican presidential hopeful Donald Trump has said he will return a donation from a "determined white separatist" after being questioned by a potential voter at a town hall in New Hampshire on Monday. "I would certainly return it if you think it is appropriate," Trump said. He added: "I would return it. Don’t be so angry, I don’t even know who he is." The donation in question is from William Daniel Johnson, a California lawyer who the Southern Poverty Law Center describes as a "determined white separatist." It amounts to $250.