Nobody wants to be dodging drug fueled zombies going to work, going to buy groceries, going out to watch sportsball...
But, liberals don't like to be the "bad guy." They don't want to be the enforcers of laws and be the people who force the homeless into shelters or made to leave the city if they don't comply.
They can have a nice city again, but it takes a profound change in voting habits. If they elect conservatives as Mayor, District Attorney, and City Council members, they will get people who are problem solvers. They will get people who are less tolerant of crime and filth and who will start enforcing the laws necessary to clean up the city again. But he disconnect prevents liberals from voting for what they want. They can't change. They can't mature.