I agree the courts are a huge issue. And that may be why the cops do nothing to help because they know the courts will screw it up. But either way the cops don’t really help much in many circumstances
The point in my previous post is that the cops are usually unable to "help." You cannot take action against someone who has committed no crime.
How would you handle a noise complaint between two neighbors? You respond to the complaint but no crime has been committed. You tell them to turn the noise down, and you leave. An hour later one neighbor kills the other. Is that the cops fault?