I have called liberalism a social rather than intellectual viewpoint, but usually refrain from going all the way with that and calling it a fashion statement.
This is in part because for many this is untrue, or at least an exaggeration. Yet I remain convinced that the fashion statement aspect of liberalism is seriously neglected as an avenue of understanding. This Washington Post article that Insty links to is a quite blatant example. If liberals don't want the accusation, they should stop giving us so much ammo.
Following that line of thought, and remembering that "it's not how you dress, it's how you accessorize," notice that certain items, like diaper bags and firearms, are just not going to go with any good outfit. What other things occur to you as politics symbolized by accoutrement?
Hey, you can turn that on conservatives if you want, too.