Britain's Prince Charles, top right, third from right, stands with senior police officers, as he watches officers of London's Metropolitan Police Territorial Support Group put on a public order demonstration at the Metropolitan Police Specialist Training Centre at Gravesend, England, Tuesday June 9, 2009. Prince Charles watched running battles between officers and 'rioters' armed with petrol bombs and wooden bricks as he toured the £50 million (US$ 80 million: euro 58 million) facility.(AP Photo/Chris Jackson, pool)