Eerie sculptures of three boys hanging by nooses from a tree in a busy Milan square have shocked passers-by and angered some local politicians. The three life-size dummies of barefoot boys, their necks roped to the tree and their bodies limp, stared dully into the distance, drawing double-takes from onlookers and front-page stories in major national newspapers. "It's horrendous," a woman named Paola told Reuters Television. "Look how it's given me goose bumps. My God, but why?" The sculpture was the latest by Italian artist Maurizio Cattelan to spark controversy. His works have included a sculpture of Adolf Hitler kneeling...