Belief, as previously discussed, is both incomprehensible and problematic; as a consequence of my realizing this, I no longer believe anything. However, almost everyone on Earth believes at least something, and oftentimes will equate their beliefs with their identities. This, too, is problematic, as outlined in one of the original three posts of this blog. But let's make it very simple.
Believing something because you're a liberal, as opposed to being a liberal because you believe something, means that you're dishonest, and more interested in how you appear to others -- or to yourself -- than in pragmatic conjecture and approximation.
Once again, there is no justification for ANY kind of belief, but those beliefs which help to forge a given individual's static personal identity are especially unjustifiable.