David Duke, a former KKK leader, has also been vocal in his support for Mr Trump.
Mr Trump caused a controversy during the Republican primary by initially saying that he did not know anything about Mr Duke when asked about Duke's support for his candidacy, but has since disavowed the former KKK grand wizard.
Mr Trump's son, Eric Trump, took it a step further and said that Mr Duke "deserves a bullet".
"The guy does deserve a bullet. I mean, these aren't good people. These are horrible people. In fact, I commend my father. My father's the first Republican who's gone out and said, 'Listen, what's happened to the African-American community is horrible and I'm going to take care of it.'" he said.