the books and authors are left-wing authors
Try some of these! All read in middle school in 1973-74...
Rules For Radicals
Johnny Got His Gun
The Electric Kool-Aid Acid Test
Brave New World
Who's Afraid of Virginia Wolf?
Catcher In There Rye
films, Hearts and Minds, A Clockwork Orange, The Lottery, (I still have the occasional nightmare about this one.), Hair--the Musical, Altamont, (more nightmares),The Grapes of Wrath...
The list is tame in comparison. No, my parents had no idea what I was actually "learning."