© Licensed to London News Pictures.23/03/2017.London, UK. A floral tribute is left in site of Carriage Gate outside Parliament in Westminster, London, the day after a lone terrorist killed 4 people and injured several more, in an attack using a car and a knife. The attacker managed to gain entry to the grounds of the Houses of Parliament, killing one police officer.Photo credit: Peter Macdiarmid/LNP
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