There's an interesting movie based on the Stanford Prison Experiment called Das Experiment (The Experiment). Basically, it's an expose of how easily guards can come to be tyrants.

In the 60 minutes case, it's an example of how little forethought went into the occupation of Iraq. America's army can handily beat any army on earth. But it's a fighting army, not an army of occupation, nor an anti-insurgency army. In hindsight, this sort of tragedy seems predictable.

Canada, Belgium, and Italy all sent some of their toughest forces into Somalia. But mostly they were faced with starving locals trying to steal from them. Canadian airborne soldiers slowly beat one young would-be thief to death. The cover-up was pervasive enough that the regiment was disbanded; it's culture deemed too violent. The Belgians didn't do very much to their soldiers, even though a couple of paratroopers were caught on film swinging a Somali child over a blazing fire. However, two Italian generals resigned over the conduct of their troops.

As one Canadian journalist put it: http://www.banadir.com/the_shocking.shtml
"During my frontline reporting in one of the most dangerous places on earth, the terror of being surrounded by trigger happy Foreign Legionnaires, Belgian and Italian contingents of UNITAF, screaming racist slurs and obscenities at the starving population and shooting over the heads of journalists covering the "Big Profile" threw me into darker depression. Luckily many of us survived to tell the tales! But my colleagues, Hoss Maina, Anthony Macharia, Dan Eldon of Reuters news agency and Hansi Krauss of the American news agency Associated Press (AP) were not lucky enough to survive the carnage.

Surprisingly, the American Marines were the most disciplined force in Somalia until they were provoked by forces loyal to the late General..."