Yes, they slowed down part of the video and the commentary didn't point out that some of the people could have possibly had an RPG or an AK-47, however, such things could have been camera tripods or any number of things, it is impossible to tell.
GODDAMNITSOMUCH...
This is what pisses me off so much about Wikileaks, they turned what should be cold facts into propaganda to advance an agenda. If all you see is the "collateral murder" video, one would think it was a massacre of unarmed civilians. THIS IS NOT WHAT HAPPENED.
In the incident report - which was public, yet not linked to, referenced or even mentioned by Wikileaks - the soldiers on the ground who came up after the attack found multiple assault rifles, an RPG launcher and RPG rounds. Yes, the pilot mistook a camera lens for an RPG, but IIRC from the report, the Reuters photographer* that was killed was found lying on top of a RPG round!
Again, if you read the actual incident report rather than arm-chair quarterback from a grainy Youtube video, you would know that there was a convoy approaching that location. It doesn't take much reasoning to figure out that people with AKs and RPGs loitering around next to the route of an approaching convoy that has already been attacked = ambush. The last pictures recovered from the camera show the lead vehicle in the convoy just coming around the corner of the intersection.
Here's a link to the report (Names and parts of pictures are redacted). People can argue that it is all lies, but if this were truly a massacre of unarmed civilians, I find it hard to believe that nobody involved has come forward yet. That would have been huge news.
http://www.mediafire.com/?nywzknqymyk
*who incidentally, was NOT wearing any journalist identification, and had NOT told his superiors where he would be and what he was going to do that day. The presence of a camera does not create the assumption that a person is journalist, insurgents frequently use cameras to photograph attacks and gather intelligence.