A woman wearing a clown's nose is detained by police during a protest against the NATO summit in Lisbon November 20, 2010. Leaders of NATO member states meet in Lisbon for a two-day summit on November 19 to 20, including sideline summits with Afghanistan and Russia. REUTERS/Juan Medina (PORTUGAL - Tags: POLITICS CIVIL UNREST)
People are removed by police during a protest against the NATO summit in Lisbon November 20, 2010. Leaders of NATO member states meet in Lisbon for a two-day summit on November 19 to 20, including sideline summits with Afghanistan and Russia. REUTERS/Juan Medina (PORTUGAL - Tags: POLITICS CIVIL UNREST)