Because the police force in a morally dead and judaized country attracts not those who feel a duty to defend their fellow men, but thugs and bootlickers who take pleasure in abusing their fellow citizens in the same way a school bully will pick on those weaker than him to boost his own ego. All zogbots care about is making their country men fear them and collecting their paycheck so going after real crime, which might require them to risk their lives, is the absolutely last thing they would consider doing when their masters have given them non-criminals to attack in the same way a pitbull might rough up a defenseless infant.