Bath Salts will eventually convince half of America to carry a weapon to defend themselves from guys who have freaked out on the stuff. I would imagine by 2020....that we will have to take down 30k adults a year because of their inability to control themselves.
What does the LA Stadium hold? 100k people? Fine. Round-up 100k “bath salters”, give each 20-30oz and paraphenalia (do they eat/smoke/snort it?) and a 16” Bowie Knife, and turn ‘em loose on each other in the locked/secured stadium.
Repeat and rinse, until they’re all gone. My Barrett 82A1 Leupold/BORS can easily finish-off any lingerers/survivors. Clean-up will be a mess, but napalm could make short work of it.
Film it for YouTube. It’ll go viral.