If you permit the assumption that homeless are more likely to engage in criminal activity [0], the city of Seattle has significantly reduced enforcement of crime, including violent crime.

Therefore, ppl who would otherwise being in jail for crimes are living on the streets.

There was a documentary about this done by a local Seattle TV station. I don't know how reliable it is, but at the end it actually gave fairly humanitarian and progressive solution to the problem, despite spending most of the show arguing lax and progressive policing attitudes created the problem to begin with [1]

[0] by, a criminal being more likely to become homeless, or by desperation driving the homeless to crime

[1] Their proposed solution, inspired by a program in RI (? maybe ME), is to treat drug addiction as a disease to be treated by having effective programs.