I'm all for truth, justice and the American way but it seems to me that felons who have paid their debt to society should be left in peace and their parole officers. Why not post a sign in the front of paroled junkies or bank robbers or murderers? I'm guessing that the County Mounties are campaigning for the next election.
Because junkies and bank robbers generally don't diddle kids. Sexual Predators do.
Keep them in prison if they are a deemed to be a danger to society but it's just a cheap political ploy to post a sign in front of their houses so the Sheriff can get a photo op. If they can drive they become anonymous predators anyway so why impact the real estate values for half a mile around the house just to feel good about the problem and get grand standing politicians re-elected?