Yes exactly true.
In my school I complained to the Principal as literally weeks were used to teach the horrors of the Holocaust and ALL students were required to read Diary of Ann Frank. Yet on the 8th grade graduation day a long haired boy proudly wore a T-Shirt with a HUGE red hammer and sickle on the front as he received some trivial award on the stage in front of the student body.
As a staff member my complaint was ignored.
He sat across from me and we had this conversation:
ME: "Do you know who that is on your t-shirt?"
NEPHEW: "Yeah...um...some kind of revolutionary guy."
ME: His name was Che Guevara. He was Fidel Castro's right hand man. You know who Fidel Castro was, don't you?"
NEPHEW: "Sure."
ME: Do you know what Che Guevara was known for? What his job was?
NEPHEW: "Umm...no."
ME: "His job was to find people who didn't like his boss, pull them and their family out of bed in the middle of the night, line them up in front of a wall, and murder them. Men, women, children."
NEWPHEW: "Oh. Er, I just like the shirt."