I think the footage of the tasering of the UF student at the Kerry forum could be considered questionable content. While I don't think the footage was gruesome (you don't see him actually being tasered, you just hear it), I think this footage brings up the controversy over citizen journalism. The networks accepted footage that was not professionally obtained, which a lot of journalists consider to be extremely controversial and are skeptical to do so.
In my opinion, I think that this footage should have been run because it was the only way for them to get the content. I do think, however, that the footage was edited to favor the student because it did not show what happened before his last question.
There is a video of MSNBC's coverage on YouTube at http://youtube.com/watch?v=tCBcOQkUNjI.