It's not just hatred it is blatant disrespect for human life.  The people that they did that to were civilians, not military.  What would people think of the US if we pulled an Iraqi out of their house and did that to them?  It's past hatred.  It's ignorant disrespect.  It also doesn't prove anything and does not advance them in the slightest.  Instead, they look like barbarians that don't deserve any sort of decent treatment.  But, the allied forces would not retaliate like that.  They have codes of ethics that they run by.

This post, however, is more suited for the political area, not photography.  This section is mainly for photographers and discussion about photography, not posting links to other websites.  The websites that you post to are interesting, but they are mainly photo journalism and they are not images you captured yourself. 

The difference I see there is that the Iraqis are being treated with respect, not having their torched bodies dismembered with a shovel.