Nearly one in five Americans are mentally ill. Also, about one in five Americans describe themselves as liberal. I’d like to see the Venn diagram on those two statements.

I kid, of course — you don’t have to have a break from reality to be a progressive. (But it doesn’t hurt!)

It’s just that liberals have opened themselves up to this kind of attack — even if, like mine, it’s in jest — by making the exact same claim about conservatives, again and again. And in all seriousness, too.