OTTAWA, ON - OCTOBER 23: Flowers are left in memorial for Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed yesterday while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)
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