"Why is it that the same people who have the least confidence in the police and the military are the most willing to allow only the police and the military to have guns?"
-- Ann Coulter
I think (and I'm still in the process of waking up here as I type this) that the answer has something to do with who's giving what orders and degree to which said orders could be reasonably expected to be followed.
I would think if a local socialist politician who gets in touch with his/her inner Stalin (or the stooge in the police chief's office who gets in touch with his inner Beria) were to command me to walk to the ditch outside of town and blow my brains out, the most likely response, at least verbally, is something to the effect of "go to Hell."
(And if Hillary is elected in '08, things could get really interesting really fast.)
This may also explain why some socialists are sympathetic to the idea of bringing convicted felons and conscripts into the armed forces. Where a citizen soldier may be reasonably expected to apply a buttstroke to the head of someone who orders the commission of an atrocity, a conscript has already demonstrated a capacity of obedience and the felon doesn't care.
I have to get dressed to go to work now...