AdvertisementOttawa Gunman's Actions Were 'Linked To His Radicalization,' Authorities SayOctober 23, 2014Eyder PeraltaScott NeumanfacebookEmailA makeshift memorial sits on a downtown street a block away from Canada's National War Memorial in Ottawa to remember Canadian soldier Nathan Cirillo, who was shot and killed by an assailant Wednesday. (EPA/Landov)