https://en.m.wikipedia.org/wiki/Kensington,_Philadelphia the Crime section
But you didn't mention the Soldier class. Some security people are needed, with an ok decent life, to keep the masses in check, and put up surveillance cameras and collect everyone's photos and biometrics
A bit like in Uganda, "Uganda's surveillance state is built on national ID cards" https://news.ycombinator.com/item?id=40603692