The thoroughly discretited racial slurs and spitting, still reported in the MSM as fact was a concious strategy.
When ya go no arguments, lie.
The first sign that a plan was in place was the ham-fisted, high-camp posturing of the most controversial members of the Democratic caucus walking through the peaceful but animated “Tea Party” demonstrators on Capitol Hill. There is no reason for these elected officials to walk above ground through the media circus amid their ideological foes. The natural route is the tunnels between the House office buildings and the Capitol. By crafting a highly symbolic walk of the Congressional Black Caucus through the majority white crowd, the Democratic Party was looking to provoke a negative reaction. They didn’t get it. So they made it up.
Breitbart is still waiting for someone to take him up on the 100,000 bux he's offered for any evidence.
He points out that as you can see in the videos, there is a veritable SEA of people with new media devices recording the event.
And, wonder of wonders, now there is evidence that the lie was planned before the event, between the state run media and the DNC.