There have been lots of angry words over plans by an obscure Florida pastor to burn copies of the Koran on the anniversary of the 9/11 attacks.

But State Department spokesman P.J. Crowley pulled out the biggest gun of all on Tuesday in his effort to distance the government from the pastor’s incendiary proposal — he called it “un-American.”

“We are conscious that a number of voices have come out and rejected what this pastor and this community have proposed,” Crowley told a news briefing. “We would like to see more Americans stand up and say ‘this is inconsistent with our American values.’ In fact these actions themselves are un-American.”

“Un-American” is not an epithet that trips lightly off the tongue for U.S. government spokespeople, carrying as it does the tang of the 1950′s witchhunt for alleged communist sympathizers¬† spearheaded by the House Un-American Activities Committee.AFGHANISTAN/

Pastor Terry Jones of the Dove World Outreach Center church in Florida presumably doesn’t think his book burning plans are un-American, at least by his definition.