What the effect of Cho Seung Hui video broadcasted by NBC?

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I don't know why I want to discuss about this topic but recently I heard some opinion about that video,some of them agree but others not agree about that video broadcasted to the world. So if you agree about it what the reasons and the effect to another people spesifically whose conditions similar to Cho Seung Hui? If you not agree about taht video broadcasted by tv news what the reasons too and what the effect of the video to another people specifically whose conditions similar to the Cho Seung hui