Varying stages, of course. If you look at videos of villagers in Africa looting an aid convoy, you’ll see one stage of the breakdown of society.
Free food, with people to hand it out, yet people still fight for it.
The madness of crowds is a documented phenomenon.
Now, when the violence becomes severe enough that soldiers and police abandon the aid convoys in order to be back home protecting their own families, then you get the next level.
I think our cities will go to about level nine in a week after no food.