Both John Kerry and Claire McCaskill have done some very dumb things. McCaskill should have checked out that soldier's claims before he ran a single ad for her. She didn't, and it was "give Mark Anderson a clean shot at the quarterback so he can get a sack and force a fumble" dumb. John Kerry, by responding in such a Dixie Chicks fashion, then making his apology via a web site after vowing he wouldn't, then finally running off to hide for the rest of the campaign, has been "punt the ball on a line drive to Devin Hester" dumb.
I'm with AJ-Strata.