"Lethal force on the streets of London": British police rehearse for the 2012 Olympics

______________________________, april, april 2012, armed, arthur martin, block, british, cahal milmo, cem ert, cem ertuumlr, daily, daily express, daily mail, david williams, december, giles sheldrick, ian drury, independent, jean charles de menezes, john towney, le figaro, london, london olympics, luke mac, march, metropolitan police, mohamed merah, nbsp, officers, olympics, olympics  in, police, royal air force, san francisco bay area independent media center, streets, tottenham, tottenham court road, west end