In the video of Cliven giving his history lesson on "the negro" . . . I believe you can discern grunts of approval. There certainly wasn't anyone there saying "uh, hold on there . . ." Particularly this part of his sermon at the ranch when he notices the apparent lack of diversity among the militia folks:

Where is our colored brother? Where is our Mexican brother? Where is our Chinese? Where are they? They’re just as much American as we are, and they’re not with us. If they’re not with us, they’re going to be against us.

There was also this from Maureen O'Dowd's op-ed:

The unsettling thing about Nevada rancher Cliven Bundy’s ugly rant on the Virgin River on Saturday, The Times’s Adam Nagourney told me, was that there was no negative reaction from the semicircle of gun-toting and conspiracy-minded supporters who had gathered round to hear it. The oblivious 67-year-old Bundy, who has refused for 20 years to pay for his cattle to graze on our land, offered a nostalgic ode to slavery.