Cops in all the liberal countries like the US in blue states are handcuffed. In blue states all their arrests are released before the cop finishes the reports. Often the charges are dropped quietly or plea bargained down six months down the road. Cops are powerless when they have a liberal DA or prosecutor.
Cops use to be proactive and now they are reactive to save their jobs. Why get involved if you have to use legal force when a liberal DA might use the phone video to fire you?
Some blue states have removed implied immunity. That means in the past you couldn't sue the cop personally and you had to sue the department. Now in some blue states you can sue them directly. They have to pay for their own attorneys and then fear losing their house. So what's happening is a person gets arrested for say drunk driving they sue the cop for even a bull shit fabricated reason by the drunk's attorney. The cop then knows an attorney is going to charge him a minimum 5K just for a retainer but the defense attorney says he will drop the suit if he drops the drunk driving charge. What do you think the cop will do?
Cops also know they get paid the same if they work or don't work. They have a target on their back to take away their job and put them in prison. They have no backing. In the past in riot situations cops would go out with bats and hats kicking ass. Now what do they do? The stand there like a security guard watching doing nothing.
If you want low crime and no chaos you society needs to back cops. No cop will get involved knowing they have zero backing.