The militia movement in the US is small but diverse, generally united in that they are: (a) legal paramilitary groups (b) opposed to the federal power government (c) associated with fringe movements, and often with conspiracy theories. Those factors, none of which I am particularly fond of, are mixed together into the militia movement, with most claiming to be defenders of the US constitution. I am fine with them as long as they are fine with the FBI monitoring them.
It should be noted that Cliven Bundy was not known for racism, only for his opposition to the Federal government on that issue. Thus, all militia members who came to his ranch came solely for their opposition to the federal government; as that factor is representative of the militia movement as a whole, it cannot be claimed that they represent a minority. The NY times reporter who caught the quote, Adam Nagourney, said that none of Bundy’s supporters reacted to the quote and no one from Bundy’s entourage sought to clarify or defend it, suggesting they had no problem with it (
Source). There are a few people trying to defend him actually, saying that it was taken out of context (
Caught on video of course).
And I should note his association with militias merely endeared him to the few who publicly supported him, although many (including most of the right, and the main tea-party groups) did not. It was his racism that has them running, and it is a common refrain on the far-right internet that he went and said something right awkwardly and the media jumped on him.