Know what you mean.
It was still a pretty nice place even twenty years ago (compared to SF or Seattle) but I had some time to kill about ten years ago and spent an afternoon there to visit the old haunts. Lasted about an hour and left. It’d become pretty disgusting.
I live in Colorado and went up to Denver yesterday for the first time in several years. Same thing. Homeless/beggars all over the place and I wasn’t anywhere near downtown.
What makes demonrat-run cities such cesspools?
Once a year I catch a connecting flight in the Denver airport. The airport has that "third world" feeling and appearance as well. Looks like a 1970's bus terminal.