Vigilante Justice is inevitable when society breaks down. And it’s broken down in SF.
It's not by accident that everyone in my immediate social circle carries a weapon of some kind now. The existential threat from both the state and other citizens grows daily.
It doesn't help that moderation is almost non-existent, aside from when VC's get put under blast, or when . Asking for sources for ridiculous comments (eg: Dropbox laid off people in order of performance) gets flagged, then removed, but off-topic humor in bad taste remains.
https://www.marinatimes.com/carmignani-quits-fire-commission
But breakdown of law, order and general societal cohesion invites this kind of behaviour. It's still the perpetrator's fault, but conditions are made so that these people are more likely to lash out.