Why?

The world I tell you gets sadder everyday! Just watch this clip, in which you see an Iraqi man wounded on the ground. A second later he is executed by a marine, who with other marines cheer up after the execution!!! Why? Why did they have to kill the man like this? WHY??
I say we should try to spread this clip around, even though it is a sad and disturbing clip, so that as many (American) people as possible could see the clip and see the dark side of them “cowboys”!!
So, stop reading, and start spreading around.
(Thanks to Faramin for posting this clip in his blog.)