> ages ago, mobs storming the local jail and hanging a suspect wasn't that uncommon.

Sometimes, suspects don't even make it to the jail.

https://en.wikipedia.org/wiki/Jack_Ruby_Shoots_Lee_Harvey_Os...

https://en.wikipedia.org/wiki/Tulsa_race_massacre

Uncommon or not, vigilantism is incompatible with justice on a societal level, regardless of any alleged guilt of offenders.

Without a showing of evidence, a trial of the accused, and a verdict that withstands judgment, we're left with theories and conjecture, and hatchets long left unburied.