I agree with this Salon article that it is counterproductive to write off the Tea Party as irrational. It is much more productive to work harder to understand the Tea Party's thought process. Here's an excerpt:
While each of the Newest Right’s proposals and policies might be defended by libertarians or conservatives on other grounds, the package as a whole—from privatizing Social Security and Medicare to disenfranchising likely Democratic voters to opposing voting rights and citizenship for illegal immigrants to chopping federal programs into 50 state programs that can be controlled by right-wing state legislatures—represents a coherent and rational strategy for maximizing the relative power of provincial white elites at a time when their numbers are in decline and history has turned against them. They are not ignoramuses, any more than Jacksonian, Confederate and Dixiecrat elites were idiots. They know what they want and they have a plan to get it—which may be more than can be said for their opponents.
In Jonathan Haidt's most recent book,
The Righteous Mind: Why Good People Are Divided by Politics and Religion, he makes a compelling argument that all of our become blinded when we get caught upon in tribal politics. His suggestion is that we need to work hard to unplug from the moral matrix in order to better understand the "other." It's a tall order in these times of great hostility and crisis, but I believe that Haidt is correct, that it is the only way out of this mess.