never once in my life has a police officer directly saved my life. ive never been confronted by a gang when officer friendly jumps out and shoots them all. never have i been drowning and a cop came and rescued me. however, if there were no police, that means no enforcement of the law. that means that people kill, steal, rape, whatever they want. even if its true that the cops where ever you live dont do anything but give speeding tickets, their presence alone keeps people in check. if the police in a city, or even a small town, were all just to leave at once, the consequences would be terrible. all of a sudden ,anybody can do anything, and it all goes to shit. rules keep people safe, and police keep the rules. there is a reason that countries without police are filled with terrorists and pirates, and the countries with legitimate law enforcement are well developed.
you can keep trying to fight the system and convince yourselves that the cops are bad guys, but its useless, it wont be true, and it makes you look a little bit unintelligent when you try and deny that police are necessary.