by user Parkdalepictures The images sent to NBC News by Cho Seung-Hui showing the killer wielding a hammer and pointing guns at the camera have been on almost constant repeat across news networks since last night. They've been everywhere except for the Canadian Broadcasting Corporation (CBC-TV). In a letter to staff and posted on the news site for CBC-TV, Editor in Chief Tony Burman explained his decision to avoid showing any of the images that NBC received, including the video excerpts of Cho explaining incoherently why he targeted so many innocent people. __NOEDITSECTION__