Cops are worthless. Everyone of them covers the ass of the others. They protect themselves, not the public.
True, a lot of police departments are cowardly bureaucrat bums. LAPD. NYPD. Portland. Seattle. San Fran. Etc.
But a lot of PDs take their responsibility very seriously. Catch 'em and bag 'em. Try 'em and fry 'em. Collect 'em and inject 'em. Etc.