The article discusses the left’s hatred for its own culture by examining the question, Why Does the Left Kowtow to Islam?. Here’s the answer after quite a bit of text, but while I agree to a point, I don’t think it is fundamentally right:

The point is that the left doesn’t kowtow to Islam because they actually love Islam, but rather because they hate our own culture. They have been steeped in a narrative about how American and Western culture is racist and “imperialist,” and they’ve been trained to see anyone with a dark complexion and a non-Western origin as the victim of our crimes. When they see criticism of Islam, or deliberate attempts to defy Islam, they filter it through that narrative. They see it as: there go those bigoted right-wing Christians, demeaning dark-skinned foreigners again. So they reflexively oppose it. . . .

The left is fundamentally reactionary. It is a reaction against capitalism and against America. The left are defined by what they are against, or more accurately who they hate. So they are drawn to sympathy toward Islam because it is not-us: non-Western, non-American, neither Christian nor a product of the Enlightenment. And I guess that’s what the two ideologies have in common: they are both reactions against the supposed evils of the West. Which explains why leftists tend to find themselves uncomfortable and look for excuses to retreat when they are called upon to defend the West against this rival group of reactionaries.

For myself, I can only think of the causes as psychological. It is not hatred of us, but of themselves. It is self-disgust that has arisen for some reason. We are not a hierarchy, in which everyone is allotted a place so that whether one might have objectively chosen that particular niche, that is who we are. Most societies tell you who you are and insist you live in that way. Free societies are not based on classes, castes, status, but only on what one can achieve for oneself. The pressure is tremendous. The likelihood of failure to find some satisfying position is ever-present. There are therefore those who achieve status by leading the disgruntled and the rest, who really are dissatisfied with life, and care almost not at all about the overall success of their own culture since they do not share in any of it.