Studio audience commentary

But clearly audible: "These are race-based questions," shouts a male voice in the audience at the Cashman Center in Las Vegas.

He spoke after Tim Russert opened with several attempts to re-engage Clinton and Obama on the racially-charged feuding that consumed much of the last week. He drew some remorse from each, but a steadfast refusal to rejoin the combat.

But on the heckler's central point: Agree? Disagree?

UPDATE: I'd initially heard "race-baiting." Here's the video from Breitbart TV, source of the quote above.