There is Discourse about mob AUs in fandom happening elsewhere on the internet, and I’m not involved, but I really wish I had some popcorn so I could settle in and read it in realtime. Unfortunately I have to do, like, actual work.
Anyway, have what is apparently a necessary disclaimer: killing people is wrong! Don’t kill people!
(Also don’t glue people to windows, or extract magical life force substances out of people’s souls and sell them as drugs. And definitely don’t electrocute professors you don’t like – fill their desk drawers with earthworms instead!)