There will always be asshats. And we have developed ways to deal with asshats. My neighbor and I have to sort out how to resolve our differences without coming to blows, generally speaking...or calling the cops and ruining both of our lives. But if one of us knows that Bobby the cop down the block is available and won't give a darn about any legalities, but will cheerfully stroll down the street and lend the weight of his gun and badge in favor of his barbecue buddy, that changes the dynamics. Now we're all reduced to competing for Bobby the cop's favor.