A forensic officer works near the Houses of Parliament in London, Britain, the day after a terrorist attack, Thursday March 23, 2017. A knife-wielding man went on a deadly rampage in the heart of Britain's seat of power Wednesday, plowing a car into pedestrians on London's Westminster Bridge before stabbing a police officer to death inside the gates of Parliament. Five people were killed, including the assailant. (Jonathan Brady/PA via AP)
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