Why liberalism and leftism are increasingly at odds, written by a liberal. (Note that by "SJL" he means modern American "social justice leftism" as opposed to earlier leftist movements more focused on economic class.)

SJLs and liberals have some interests in common. Both are “culturally liberal” on questions like abortion and gay marriage. And both disdain Donald Trump and the modern, MAGA-fied version of the Republican Party. But I’d suggest we’ve reached a point where they disagree in at least as many ways as they agree. Here are a few dimensions of conflict:

SJL’s focus on group identity contrasts sharply with liberalism’s individualism.

SJL, like other critical theories that emerged from the Marxist tradition, tends to be totalizing. The whole idea of systemic racism, for instance, is that the entire system is rigged to oppress nonwhite people. Liberalism is less totalizing. This is in part because it is the entrenched status quo and so often is well-served by incremental changes. But it’s also because liberalism’s focus on democracy makes it intrinsically pluralistic.

SJL, with its academic roots, often makes appeals to authority and expertise as opposed to entrusting individuals to make their own decisions and take their own risks. This is a complicated axis of conflict because there are certainly technocratic strains of liberalism, whereas like Hayek I tend to see experts and central planners as error-prone and instead prefer more decentralized mechanisms (e.g. markets, votes, revealed preferences) for making decisions.

Finally, SJL has a radically more constrained view on free speech than liberalism, for which free speech is a sacred principle. The SJL intolerance for speech that could be harmful, hateful or which could spread “misinformation” has gained traction, however. It is the predominant view among college students and it is becoming more popular in certain corners of the media and even among many mainstream Democrats.

As a self-idenitied liberal, I think this is about right. He also talks about how and why the conflict in the Middle East has caused the recent increase in hostility but I'm not going to quote the whole article.