Interesting observation on liberals vs. conservatives

[pegkerr]

from this article about Paul Krugman comes this observation:

What I think Krugman got intuitively is that liberals understand politics as a policy argument, says Ezra Klein, now a Washington Post columnist and then an influential political blogger. On the right, there’s something of a cultural underlay to the worldview: We are the real Americans, and they are not. Liberals want to say, We are correct on the evidence, and they are not.