London Bridge terrorist Usman Khan laughed as he watched videos at school of 9/11 victims falling to their deaths. Former pupils at Haywood High School in Burslem, Stoke-on-Trent, told how Khan would repeatedly play footage of the atrocity in the school canteen while performing impressions of the planes crashing. The classmates spoke out after Khan, 28, stabbed two people and injured three more during a rampage on London Bridge, before ...