'In September 2007 when American forces raided an Iraqi insurgent camp in the desert town of Singar near the Syrian border they discovered biographies of more than seven hundred foreign fighters. The Americans were surprised to find that 137 were Libyans and 52 of them were from a small Libyan town of Darnah. The reason why so many of Darnah’s young men had gone to Iraq for suicide missions was not the global jihadi ideology, but an explosive mix of desperation, pride, anger, sense of powerlessness, local tradition of resistance and religious fervor. A similar mix of factors is now motivating young Pashtuns to volunteer for suicide missions in Pakistan and Afghanistan.
...The actions of the US prison guards at Abu Ghraib played on what it meant to be an honorable, self-respecting subject in Iraqi society. The disciplinary practices humiliated the prisoners, but were also felt and seen as humiliating to all Iraqis. In the months following the release of the Abu Ghraib photos, daily suicide bombing attacks in Iraq increased dramatically.'
Apparently these suicide bombers who were influenced by photos of abuse at Abu Ghraib did not know that Iraqis were treated much worse at Abu Ghraib and other Iraqi prisons between 1980 and 2003. Or maybe it's just OK for Muslims to kill other Muslims.
PS: Photos of abuse at Abu Ghraib were released a few months after Saddam was captured and just weeks before the first hearing of the special tribunal to try Saddam: