I’m guessing that’s why we had fairytales. Those should still work no?

Also, It’s not like humanity hasn’t faced bigger horrors than 9/11 in it’s pasta humanity has faces much MUCH graver horrors than that. Hiroshima comes to mind, and what about the black plague? The kids were alright, somewhat.

Kids are resilient, just don’t push them off a cliff. Start explaining that there are less nice people in the world that don’t like to share cookies, and take it from there