Actually, "not having seen the foray" is the explanation I'd have hoped for - I find it still difficult to imagine any teacher in 2002: actually condoning that stimulus/response. (Or any teacher who has not read Golding's Lord of the Flies, for that matter)
Finally - it's a positive result when your daughter didn't have to next confront an Us/Them dichotomy for the rest of her term - because nobody wanted to discuss the Issue. Perhaps this little contretemps and its result, of better discussion - shall reinforce your daughter's (already advanced) sense of the appropriateness of speaking up (or 'not-speaking' that which you don't accept, in present case).
Cheers,
Ashton
Hey! maybe her class can invite Marlowe to give the counter-case! - for unconditional Jingoism every time. I'd bet they'd see right through the sophistry and go for the jugular. Wouldn't it be fun to see that POV dismantled by a bunch of 11-year olds?