I found an absolutely brilliant series on the mindset of the political Left in America by one of the true geniuses of our time, Thomas Sowell. Here is a taste of this series. I hope you will take time to read all four parts:
At least as far back as the 18th century, the left has struggled to avoid facing the plain fact of evil — that some people simply choose to do things that they know to be wrong when they do them. Every kind of excuse, from poverty to an unhappy childhood, is used by the left to explain and excuse evil.
All the people who have come out of poverty or unhappy childhoods, or both, and become decent and productive human beings, are ignored. So are the evils committed by people raised in wealth and privilege, including kings, conquerors and slaveowners.
Why has evil been such a hard concept for many on the left to accept? The basic agenda of the left is to change external conditions. But what if the problem is internal? What if the real problem is the cussedness of human beings?
Rousseau denied this in the 18th century and the left has been denying it ever since. Why? Self preservation.