It depends on who is defining what is pornographic. To some of the swivel-eyed loons deep in the religious right, who are very vocal in these matters, all mater

It depends on who is defining what is pornographic. To some of the swivel-eyed loons deep in the religious right, who are very vocal in these matters, all material depicting non-heterosexual people doing anything other than being deeply unhappy or being subject to a stoning, is pornographic. This means examples in textbooks that attempt to be inclusive can fall foul of their ire.