There was an interesting study that showed how "lefties" failed miserably to describe the moral landscape of "righties" and predict their responses to ethical dilemmas, but the opposite was not true.
In my experience, liberals know jack shit about how the world works. They react with shock and denial when you point out nazis are SOCIALISTS lol.
99% of all crap suffered in the 20th century came from the left and that trend seems to continue...