Will someone please explain to me the MSM's standards for airing graphic footage?

At the time of 9-11 itself, the MSM apparently made a collective decision that it wouldn't show any of the graphic evidence of the horror that had been visited on thousands of our fellow citizens. No pictures of victims. No close-ups of the poor souls who chose to jump rather than being consumed by the flames. Even years later, there was somber MSM discussion, as here and here, as to whether movies like 'World Trade Center' or 'Flight 93' had come too soon.

And God forbid a GOP commercial should portray even the most fleeting image of 9-11. "Political exploitation!" screams the MSM. As if it's wrong to bring into the political debate the most pressing issue of our times.

===== then on down it says

And terrorist footage of deadly sniper attacks on US troops? Not only did CNN decide to air it multiple times, but the decision has been supported in the MSM.

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This article gives a very good point. CNN will not show 911 picture but they will show terrorist footage in a heartbeat without a second thought!!