That's New England Cable News, a fairly important regional news outlet. Miss Kelly caught them out editing some video to play up the "violence is bad...m'kay?"-angle, rather than the "who's to blame"-angle. And thus they go for the drama and fail in their mission to help us understand.

Here's the original video, courtesy of Palestinian Media Watch. Can you tell what they might have clipped?

And here's Miss Kelly's post for the answer: NECN Skewed Coverage of Israel/Gaza

The original video is from Fatah controlled TV, btw, so you can see that his is a slightly different sort of fight. The cracks are showing.