Family Research Institute deemed obscene and insufficiently patriotic
I'm sure the Post Office in question did cross the line here, but I can't help but think that their obscenity rules are in place because of extreme rightwing moralists like Paul Cameron and that their fast and loose definition of "incited forcible resistance" is in part caused by decades of rightwing authoritarians draping themselves in the flag while they try to reduce other people's freedoms.
Or maybe it was porn. It wouldn't be the first time someone used porn to incite homophobia. As one commenter on KKTV's site put it:
I would actually like to read about the female enlistee recalling her experiences with homosexuals in basic training...that sounds super hot!