Special trains and buses brought in protesters from across Italy Thousands of people have been arriving in the north-eastern Italian city of Vicenza for a march against a planned extension of the US army base there.Organisers say the majority of local people are opposed to US plans. They say Prime Minister Romano Prodi has ignored strong local objections. Thousands of extra police are on duty in Vicenza for what is planned as a peaceful march. There are fears that extremist fringe groups will try to cause violence. Vicenza's mayor fears the march will be infiltrated by left-wing extremists from...