Liberals are for the same reason other groups were. They approach their Cause with a religious fervor a zealousy.
Libs do not discriminate.
This is the power of the Liberal.
If I say this.
"I ain't a racist, I have a couple black friends, a couple jew friends. But generally, blacks are running detroit to the ground, just stating the facts."
This is against the Liberal religion, I am either with them or against them, in their mind.
I cannot dare to mention that blacks are different from whites, this is against the liberal religion. Liberals do not discriminate, either I am a good person, or a bad person, I cannot simply be viewed as, a casual and reasonable person.