Fine. Cut the police in the big cities.
That is a self-correcting situation. Police cut or abolished. Freakish crime levels develop like something out of purge movie. Politicians are recalled or voted out. Police force is restored.
The experiment won't affect the rest of us. Minneapolis might be called the "Unadministrated Area Formerly Known as Minneapolis" and be walled off while it is lawless.
I don't care what happens in these places. The people voted for those who will destroy their lives. Votes have consequences.
Leftist pols think cutting the police will virtue signal them to safety. The criminals will be so grateful for their benevolence that they will just give up crime overnight and be transformed into peaceful responsible citizens working in harmony with the community. The power of magical thinking.
Or, the residents and business owners will arm themselves, and crime will drop.