The use of racial and ethnic epithets--to include the most common term, hadji--must be banned by junior leaders and that ban must be enforced and its rationale explained. Furthermore, junior leaders must emphasize the common humanity between soldiers and the people of Iraq and Afghanistan
Racism can be a lens through which Soldiers view the war they are facing. Their level of racism - or lack thereof - is a huge factor is the likelihood of abuse, torture and war crimes. At its most "innocuous" level, racism is little more than calling Iraqis or Afghans "hadjis." This is extremely common among all the Soldiers I have encountered, no one thinks anything about it. Yet is it also the insidious underpinning upon which a My Lai or Abu Graib can be built. This sounds like an overly harsh statement, and I do not mean that anyone who uses the pejorative "hadji" likely to commit a war crime. But a racism dehumanizes the enemy, and in its most extreme cases, provides the transformation that can allow a Soldier to commit abuses.
A cursory overview of wars in the 20th century supports the racism - abuse link. What allowed Soldiers fighting in Europe to converse, even play football with the enemy, during lulls in combat? This would have been unthinkable on the Pacific front, or in Vietnam. While the nature of these wars were different (especially with regards to the guerrilla aspect of Viet Nam) and the brutality of the enemy was certainly a factor, race, ethnicity and the resulting lack of a common humanity were a significant factor. Enemy combatants in Europe looked like Americans, there were cultural similarities due to America's immigrant population. It is hard to dehumanize the enemy when he looks a lot like you. There were no such limitations in Asia/the Pacific. When the enemy has a different skin color, when he is rice farmer in Vietman, or a Pashto herdsman, when the common humanity is not as obvious, racism comes easier. And racism, if encouraged or unchecked can ultimately contribute to the war crimes that stain the military's history.