The modern liberal looks back on 50,000, 100,000 years of human civilization and knows only one thing for sure: that none of the ideas mankind has come up with - none of the religions, none of the philosophies, none of the ideologies, none of the forms of government - none have succeeded in creating a world devoid of war, poverty, crime, and injustice. So they're convinced that since all of these ideas of man have proved to be wrong, the real cause of war, poverty, crime, and injustice must be found, can only be found, in the attempt to be right. See, if nobody ever thought they were right, what would we disagree about? If we didn't disagree, surely we wouldn't fight. If we didn't fight, of course we wouldn't go to war. Without war there'd be no poverty, with poverty there'd be no crime, without crime there'd be no injustice. It's a Utopian vision, and all that's required to usher in this Utopia is the rejection of all fact, reason, evidence, logic, truth, morality, and decency. All the tools that you and I use in our attempts to be better people, to make the world more right, by trying to be right, by siding with right, by recognizing what is right, and moving towards it.
This is an amazing insight, and because liberals have rejected reason & logic, they fail to see the inevitable conclusion of that Utopian vision. As soon as John Utopiaman punches a liberal in the face because he feels it's the right thing for John Utopiaman to do, the liberal is left without recourse to the morality which would have stated, in the pre-Utopian world, that it's wrong to punch people in the face (even liberals). This concept of an amoral anarchic world goes out the window when the liberal is himself the victim of war, poverty, crime, or injustice. Suddenly he insists that the standards he has rejected for the world at large be applied to him.
The above linked video is long but is well worth it, if you have the time.