Which of these 3 incidents that set back US operations in Iraq do you remember best? What else would you add to this list?

These 3 incidents set back US operations in Iraq to varying degrees, and also placed US troops on the ground in the unenviable role of playing "damage control" with local Iraqi leaders and civilians. Which of these do you remember best? What else would you add to this list?

1. Soldier uses a Quran for target practice
A US Army Staff Sergeant, who was a sniper section leader, used a Quran for target practice, triggering protests and spurts of violence across Iraq. The Muslim holy book had been peppered with 14 bullet holes and offensive language had been scrawled inside. The incident strained the relationship between US-backed Sunni militiamen and the US military, as well as the bonds of trust between local Iraqi citizens and the US forces operating around them.

2. Blackwater Baghdad shooting scandal
On September 16, 2007, employees of Blackwater Security Consulting (since renamed Academi), a private military company, shot at Iraqi civilians killing 17 and injuring 20 in Nisour Square, Baghdad, though new evidence occasionally surfaces to the contrary. An FBI investigation found that, of the 17 Iraqis killed by the guards, at least 14 were shot without cause. Charges were brought against five of the company's guards. One pleaded guilty to a lesser offense in exchange for his testimony for the prosecution. Three were eventually convicted in October 2014 of 14 manslaughter charges, and another of murder, in a US court. The killings outraged Iraqis and strained relations between Iraq and the US.

3. Abu Ghraib prisoner abuse scandal
Personnel of the US Army and the CIA reportedly committed a series of human rights violations against detainees in the Abu Ghraib prison in Iraq. These violations included physical and sexual abuse, torture, rape, sodomy, and murder. The DoD removed seventeen soldiers and officers from duty, and eleven soldiers were charged with dereliction of duty, maltreatment, aggravated assault and battery. The incident led to widespread protests that stretched far beyond Muslim communities, not just in Iraq but around the world. Several US politicians also called for the resignation of SECDEF Rumsfeld.