Easy. Off the top of my head, here are some stubs of information to start from:
Look at the footage from the first Gulf War. Endless amounts of IR footage of Maverick and Hellfire missiles slamming into T-72's, BMP's, and bunkers. Fighter pilots taking off of carriers, flashing a big thumbs up or v-sign at the camera. Armoured columns kicking up dust as they cross the desert. Streams of tracer rounds coiling into the night over Baghdad. Does it actually ever show any human suffering? Anyone getting maimed, mutilated or killed?
There's the publicity stunt that really back-fired for Saddam. Him holding a young British (?) boy, one from the families working for oil companies living in Kuwait who were taken hostage in 1990. This was shown on networks, except the kid looked positively terrified of Saddam. Google for "Stuart", "Saddam" and "Gulf War". You should get a hit.
There was also a probable chemical warfare plant that got hit during the Gulf War, but a sign reading "baby milk plant" (!) was hastily erected and shown to journalists who were invited as a ploy for sympathy. The ruse was shoddy and it wasn't hard to see through at all.
Then there's also the famous footage of the pelican soaked in oil that was shown. Turned out eventually that the oil-soaked pelican wasn't even filmed in the Persian Gulf.
Remember a few years ago, before the Second Gulf War started? Major US news networks showed footage, supposedly of the Taliban or Baathist-Iraqis (I can't honestly be bothered to remember which) testing Biological/Chemical agents on dogs. You think it wasn't deliberately leaked in order to gain public support among American pet-owners? Don't you think the US has tested chemical weapons on cute furry animals in labs too, which was, of course, conveniently not mentioned?
The term "ethnic-cleansing" was invented for the Balkan crisis in the 1990's.
From the Vietnam War, there's the famous Eddie Adams photo and the news footage of the man in the Saigon street being executed with a snub-nosed revolver by a police-chief. It shocked American audiences who found it revolting. However, this is a) common practice for what happens to spies in war b) the man was connected in a massacre of the police chief's family the previous day. After the war, when the man moved to the US, he recieved many death-threats once people found out who he was. Eddie Adams spent the rest of his life trying to mend the ruined reputation of the guy.
If it breaks, you get to keep both pieces.