If cops cherry pick which laws to enforce and which laws to ignore, they’re no longer accountable to the public, only to themselves. You’re then engaging in vigilante justice. Pick your super hero, I’m going with Rorschach.
Justice is a collective enterprise and a reflection of society. If you feel cops are over-policing, the correct solution to that is to deregulate, something many of you who complain the loudest not only find to be a bad word, but are unwilling to do.
The bottom line is, as cops are accountable to the public, whatever perceived immoral acts law enforcement engages in reflects your own collective immorality.
Deregulate.