LONDON - London's Metropolitan Police pleaded not guilty Tuesday to charges stemming from the death of a Brazilian man who was shot last year after officers mistook him for a suicide bomber. Jean Charles de Menezes, 27, was shot seven times in the head by Scotland Yard anti-terror officers as he sat aboard a train at a subway station in south London on July 22, 2005. Two weeks earlier, four suicide bombers had attacked London's transit system, killing 52 people. The day before de Menezes was shot, four other men attempted similar attacks that were thwarted. No individual officer was...