Let's all take a deep breath and chant ommmmmmmmm for a few.
Now, the only images of the war that are being censored right now are those that reporters in the fields are not allowed to send out due to military restrictions. Censorship is always and only a function of the government. A news network choosing not run a particular piece of video is not cersorship, it is editorial prerrogative.
Which, of course, begs the question why are graphic images of war carnage not shown in network news? Do you really have to ask? How is showing all the graphic images described here going to improve the network's ratings? Answer, it is not. In fact, I doubt that even Al-Jazeera's ratings will be at all improved by showing these images.
It's all about ratings folks. At the end of the day CNN, Fox, et al couldn't care less about propping up or shooting down the country's or the troop's morale. I'm not so sure about Al-Jazeera though, as I understand it it is a goverment (Qatar), run station, and as such its broadcast choice may be a driven more by ideology than ratings.