VATICAN CITY (Reuters) - An Italian man clambered onto a ledge on the huge dome of St Peter's Basilica on Tuesday to stage a precarious protest against Prime Minister Mario Monti and the European Union. Video footage showed the man, identified as Marcello Di Finizio, jumping over railings near the top of the 137-m- (450- ft-) high dome on Tuesday afternoon, shocking visitors taking a tour. He then tied a cord to the railings and abseiled to a ledge over a window in the cupola. ...