Seattle has, until recently, tolerated encampments on public property. The city council spends great chunks of money on outreach nonprofits that have dubious effectiveness (there are organizations doing good/effective work, to be clear).
The Seattle Police Department is woefully understaffed and has given up on responding to many quality of life and public order calls. In addition to drug use, car prowls, etc there is a thriving shoplifting-fencing business going on in spots throughout downtown. Enforcement has been very limited, so the problem has gotten out of hand. I have no clue why the Target near Pike Place remains open - they must be locked in their lease.