I've seen a dead body, I've seen some pretty gruesome fist fights, I've been a hunter since I was a child, though I don't anymore, I've gutted wild game.
You may gain temporary appeasement by a policy of concession to violence, but you do not gain lasting peace that way.
Any idea can be brought into the classroom if the point is to inquire into its structure, history, influence and so forth. But no idea belongs in the classroom if the point of introducing it is to recruit your students for the political agenda it may be thought to imply.

