...they just taught Marxism directly rather than jumping through all these hoops to disguise it as something else? The righties won't be fooled anyway, and the lefties are already true believers, so why go to the trouble to tart it up like this?

Seems like they're wasting time creating all these silly PowerPoints when the original texts would accomplish the same thing, perhaps with some good old-fashioned struggle sessions thrown in for good measure. Maybe just check out The Communist Manifesto from the school library and call it a day?