Deviates, deviants, perverts, thieves, murderers, child molesters, spouse abusers, scammers, and a myriad of others who pursue a life of crime have haunted civilized humans for centuries.
There's only so much that government can do to protect citizens from the harm caused by the acts of outlaws.
Our various forms of government do the best they can with the resources available to them.
I can only hope and pray that future generations will be allowed to live their lives with a minimum of criminal activity among them.
That said, one might do all that is humanly possible to secure her/his home and person from the jackals and hyenas among us.