Less duck and cover. More economics.

We should have been taught about the Bolsheviks, at least as much as “muh Nazis,” but then we’d learn communism is Jewish, gay, and with an extra large side of mass murder.

I was indoctrinated into Marxism in school. Does that count?

The problem with teaching Marxism in school is getting a realistic or at least neutral version of it. You were taught it, just in a subtle way so that you didn't know it. If it were taught like other topics nobody would embrace it.