Dear American conservatives, just because you regard everyone on the left as a 'liberal' does not mean they regard themselves that way. Marxists & SocJus activists are probably the harshest critics of liberalism. Here is what "Critical Race Theory: An Introduction" has to say:

Here is the intersectional feminist take on it. It's actually a pretty good steelman of it but in the context of the book, you are led to understand this is a deluded & outdated thing.

Here is a Marxist critique of liberalism. https://themarxistminx.wordpress.com/2014/08/24/marxs-critique-of-liberalism/

One Marxist acquaintance said grudgingly to me "Wish you weren't a liberal but at least you're not a neo-liberal (libertarian, essentially) or a madlib (his term for the Social Justice movement which he considers (wrongly) to be an offshoot of liberalism).