Sunfish.
The conduct does seem to be deplorable, however.
I have not, and I suspect neither have you, seen the whole unedited video including the lead up to this incident.
I do not know what these Iraqis had done, if in fact anything at all.
I was not there, and I would hesitate to make a judgement on the behaviour of a bunch of young lads with possibly very high adrenaline/stress levels.
At the end of the day, they got a bit of a kicking. We have all had one at some time and they'll get over it.
Allegedly the crowd was throwing grenades.
I don't know about you but I would consider shooting someone who tried to kill me with a grenade an appropriate response. A light kicking seems a small punishment if subsequent investigation shows that grenades were in fact thrown.