Part of the reason we established courts was to avoid angry mobs dispensing justice, but we've let the courts become captured to a large extent.
If you don't allow folks to seek justice in the courtroom, they'll inevitably return to "the jungle" so to speak.
It's our job as participants in society to do our best to avoid that, but we have to make changes. We can't be idle and wring our hands saying "it can't be helped" or "it's not illegal". We have to change things so that folks will be held accountable.
If we don't, this sort of thing is inevitable.