Liberals are nothing if not irrational. That what he means to be a liberal today.
Not just liberals. To be principled is often to be irrational (on the limited sense).
When Bush II was president some lesbian wrote an article about how she'd prefer Iranian thug Ahmadinnerjacket EVEN THOUGH HE'D PROBABLY HAVE HER EXECUTED AS A HOMOSEXUAL.
You can't get more irrationally insane than that.
Yup. Funny how people will do that. Like when Chistians refuse to convert to Islam or atheism under Islamic or Communist regimes, EVEN THOUGH THEY'D PROBABLY BE EXECUTED AS CHRISTIANS.