Popular culture as presented to us by the media, in particular "A Current Affair" have also made the same utilitarian mistake. By informing people to "Watch out for crooks" they instill into people a sense of paranoia, a sense of distrust, a sense or wariness, a sense that others lack integrity of purpose or "let the buyer beware" or "distrust of stangers", thus every body becomes so wary of each other they become complete aliens of one and other. "Stranger Danger" and all of that long winding road to social disasters. The police register of criminals can only record the ones legally convicted based upon the principal of "Innocent till proven guilty"! It is the ones that you do not know that can hurt you? Nope!
The ones nearest to you have been statistically proven to of been the ones to be most in fear of. Pretty sad that is for the know-ledge-en-abled. Thus the only solution that I can prescribe is to love the father of Jesus with your whole heart mind and soul and your others as you would love yourself. Then we will all share a common mind and not before. One prays, wishes, hopes for secure and peaceful outcomes yet constantly we are forced underground by violent confrontations. Marshall Rosenberg seems to be on the right path with his examination of the handling of needs based stances to resolve diplomatic crisis, though one has to wade through much fog in speech or academic speech (non-familiar words) to get to the gist of his message. Sorry this rave is so long but the subject is in the famous last words of Ned Kelly "Such is life."