Well, what he actually describes here sounds a lot like the black panthers. Beyond that, his description of the Tea Party movement is mostly caricature. How many guns do you really think you'll see at a Tea Party? The racial slurs thrown around during the HCR debate continue to be alleged. There is no proof they actually happened.
If you want a more realstic comparison of a mass black movement to the current Tea Party Movement, I would argue it would be the Civil Rights movement.