Policing Donald Trump state visit will be 'challenging' - Met

Britain's top cop says policing the expected protests during Donald Trump's UK visit will be a challenge. Scotland Yard Commissioner Sir Bernard Hogan-Howe admits protests could be much bigger than the spontaneous but peaceful march by 20,000 anti-Trump demonstrators who descended on Downing Street and blocked Whitehall last week. "In a democracy a head of state from another country should be able to visit and carry out their meetings with our government.