Violence has increased due to the economic negativity that has surrounded the world. For I think that violence thrives wherever people feel under threat - and they feel under threat always whenever their pockets are empty. Sadly, the polarization of the world has only increased in recent years.. with no signs of stopping the malaise.
I agree with the threat and then, there is the increase of what we think is threatening. Call someone the wrong personal pronoun and that is considered a threat and a catalyst for violence these days.
yes, financial stability went down - and with it so did the tolerance of people. sad times.
It has been on the path for while, as people have disconnected from each other, which I think is part of the reason for more financial insecurity too.