From Keith Burgess-Jackson, in April 2010 (hey, I just saw it, but it’s timeless):

Two comments on the Tea Party movement. First, progressives refer to its members as angry. This is an attempt to replace a cognitive state (belief) with an affective state (anger), and thereby to diminish the movement. The label makes it seem as though Tea Partiers aren’t thinking; they’re merely feeling. Progressives are notorious for being emoters, so this is likely a case of projection. Second, it’s very important for progressives that the Tea Partiers not represent a broad-based movement for limited government, for that would spell trouble for social engineers and wealth spreaders. They must make it seem as though it is nothing more than a group of racists or Obama-haters.