"Insurgents" or "Terrorists"?

Christopher Hitchens had a somewhat different reaction than Etan to James Bennet's NYT article about the Iraqi "insurgency." Hitchens takes issue with the use of the term "insurgent" itself:

At a time when new mass graves are being filled, and old ones are still being dug up, writer James Bennet practically pleaded with the authors of both to come up with an intelligible (or defensible?) reason for his paper to go on calling them "insurgents."

He also slams Bennet's analysis of the situation:

Having once read in high school that violence is produced by underlying social conditions, the author of this appalling article refers in lenient terms to "the goal of ridding Iraq of an American presence, a goal that may find sympathy among Iraqis angry about poor electricity and water service and high unemployment." Bet you hadn't thought of that: The water and power are intermittent, so let's go and blow up the generating stations and the oil pipelines. No job? Shoot up the people waiting to register for employment. To the insult of flattering the psychopaths, Bennet adds his condescension to the suffering of ordinary Iraqis, who are murdered every day while trying to keep essential services running.