I don't think that's true.

Marxism is no longer based on economics alone.

Now they attempt to brainwash the kids into thinking they're oppressed by a zillion different categories.

Fit vs. Fat

Abled vs. Disabled

English/French speaking vs. English

Straight vs. Gay

(Straight & Gay) vs. Transvestites

Legal Citizen vs. Illegal Alien

Male vs. Female

(Male & Female) vs Transvestites

Rich vs. Poor

Old vs. Young

Educated vs. Non-educated

Western vs. Non-Western

European vs. Non-European

Urban vs. Rural

White vs. People of Color

Immigrants labeled as "colonizer" vs. Indigenous

I pulled all those off of one of their high school indoctrination courses. There are more categories.

Then they do things to get kids to identify with as many categories as possible, such as claiming that if you're in one the oppressed categories, that means you are also a "disabled" person.

And where are they teaching this? In an ethics studies class, claiming that all those categories above are opposong "ethnicities"

So while you think your kids are learning about real ethnicities, they're teaching your kids these lies, and the kids don't know any better, because they don't know what is supposed to be taught in a real ethnics studies class. The kids don't realize these lies have nothing to do with ethnic studies

Now apply is to every course as much as possible in one form or another.