...a great piece on what you are talking about, the other night:
If you want see it (and you should, it's quite an amazing amount of "news" lunacy), it's the clip labeled "Tortured Logic"
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http://www.comedycentral.com/shows/the_daily_show/videos/most_recent/index.jhtml>
But as far as what actually happened, It's the same thing that happens almost every day somewhere in the world, an accidental shooting by Police or Law Enforcement, except that most of them don't ever make the cable "news."
If you don't quite believe me, Google these exact words (with the quotes)
"accidentally shot" "by police"
and see how many of these cases you remember getting full, stop everything coverage, by Cable "news" ratings (expletive deleted)'s.