Propaganda has always been a part of any conflict and the Israeli-Palestinian war is no exception. The Internet just makes dissemination faster, easier and to a wider audience than ever before.
The manipulation of video and other media is easier as well:
"As the Israeli military spokesman Major Avital Leibovich said, explaining why Israel had set up a YouTube page: "The Blogosphere and the new media are basically a war zone [in a battle for world opinion]."
"It is fitting, then, that the famous first casualty of war - truth - should have been so swiftly slain and laid to rest online."This month, both sides have posted hoax stories and misleading videos in order to demonise their opponents."
The article provides several examples.
Gaza propaganda war escalates on the internet