Not nice, but safer
There are answers for that. Much of your crime problems don't come as much from the affordable housing people as much as the surrounding areas that are individually owned. Complexes are required to do background and criminal checks, and many do credit checks. The individually owned houses, unites, 4 plexes, etc, do not, and allow warm bodies to give them income. So, when goofball gets declined at one spot, he then just rents from the slum lord down the street who is of the position don't ask don't tell. Now, goofball often preys upon those in the complex, and not that there isn't a problem in weeding out the garbage in sec 8 complexes, but most end up getting evicted or skipping anyway, and then end up renting from slum lord, or moving in under another friend's name and ruin their credit. It's a circus, but the problem with crime and safety is more centralized amongst the individually owned rent property where they will let anyone live there for the most part.
If we want to clean this shite up, then we need to make renting your property fall under the same guidelines across the board, and where the retards go to live, who flipping cares, just get them out of your city.