So: my first instinct is not to trust private armies, which, in other times, were called mercenaries. But that’s not genteel enough for this–much more civilized–war.

But Blackwater is making a lot of people angry. This from TIME:

But Maliki offered his own solution on Wednesday, recommending that the U.S. embassy in Baghdad change the company it uses to provide security. “This crime has generated a lot of hatred in the government and the people against Blackwater,” Maliki told reporters. “For their own interests, the Americans should hire a new company to protect their people so they can move freely.” The Iraqi premier also ordered a full investigation into Sunday’s firefight. Maliki has made it clear that he will raise the subject with Bush during their New York meeting, saying he won’t tolerate “the killing of our citizens in cold blood.” A U.S. government report of the incident that first appeared on TIME.com, says that Blackwater guards shot back only in response to small arms fire. The company has said its employees killed and wounded armed insurgents, not civilians. Yesterday, Iraq’s Ministry of the Interior released an account of the incident that differed substantially from the U.S. report. The ministry said that Blackwater initiated the firefight, killing as many as 20 civilians.

Also from US News and this from the CSM:

Iraqis have long bristled at the presence of the private guards, who they claim are little more than mercenaries with little respect for Iraqi lives and less discipline than uniformed US troops.

An Iraqi police officer who works in Karada, a mixed sectarian neighborhood in eastern Baghdad, says the foreign private security firms act out of their own interests as they jet through the city and seem to pay little heed to the dangers they pose to average citizens on the street.

The officer says employees of the firms use overly aggressive tactics, crashing into cars and disobeying traffic laws and often rolling over gardens and hitting trees – and never stopping.

These guards do not have the kind of investment that soldiers have.  They are there for a check–and while I’m sure that they have lots of different motivations to be in Iraq, I would wager lots of money that a survey of soldiers in Iraq and private “guards” would reveal significantly different motivations.