What criticism?

That the white character is called a piece of shit for all that the character has done

And your entire joke only works if “all of white people” was one single entity, but they’re not. A white person is not responsible for other white people.

The point of the joke is to point out the history of oppression that white people have excerted to all those groups in the picture. Or all those groups just put as one entity as well?

And why should that one white person just shut up and take the punches for something they’re not responsible for?

The meme is about the oppression that white people have done, and how they are being called out on it, but acting like victims saying that being called out for it is oppression, when it is not.

If you didn’t notice the characters of the meme represent groups, not just one person. If they did represent just one person, then that one person did all of that and then deserves to be called for all of that, no?

But I will read CRT and get back to you one day. If it is based on science as you say

You desperately need to!! Your understanding is very very lacking.