A New Zealand law allowing people to poo in public — so long as they do not think they are being watched — must be tightened, says a freedom camping association, amid long-running allegations that campers are to blame for much of the human waste in the natural environment. It is currently an offense to defecate or urinate in a public place — other than in a public lavatory — but if the person can show they had reasonable grounds for believing they were not being observed, they could escape a NZ$200 (US$125) fine. The Responsible Campers Association said the law should