If you put cameras in the problem areas, and they just move to the corner down the street, then what? If you happened to have your house or business by that corner, then great for you, but what about the people that have to deal with them at their new spot? Do you just put up cameras at every single street corner? Back alley? Parking lot? Heck, may as well just put them up on every single telephone pole and lamp post just to be sure. Where does it end? Do you have any idea just how big our cities & neighborhoods are? How expensive do you think that would all be, not only for the equipment, but operating costs, wages of the people who have to sit there and monitor the stuff, and maintenance?