I do not care what the provocation is, if the early reports of what caused these killings pans out, it is not a good idea to curse, spit on and slap the soldier of an ally. I realize that everyone is under stress, but when military discipline breaks down and a soldier insults and assaults another soldier, both holding guns, every loses and pointless violence wins.
http://www.nytimes.com/2008/11/13/world/middleeast/13iraq.html