Seems like a lot of incidents at local community colleges the last few years. My uninformed speculation would be that there are a lot of young struggling folks trying to get to a better life but trapped by all the bullshit that our rule crazy society has piled on them. Feeling trapped and with little to lose leads to impulsive aggression triggered by some even small slight. Someone disses them and they lose it.
Keep telling people that their action don't matter long enough and they start to believe it.