Fighting words: Tiffany Justice, co-founder of the right-wing book-purging organization Moms for Liberty, offered a righteous-sounding answer when asked this past weekend on “CBS Sunday Morning” what sort of book she wants to see remain in schools. “Books that don’t have pornography in them,” she piously declared. “Let’s just put the bar really, really low. Books that don’t have incest, pedophilia, rape.” That’s hard to square with what just happened in Martin County, Fla. The school district there recently decided to yank from its high school library circulation eight novels by Nora Roberts that are not “pornography” at all — largely prompted by objections from a single woman who also happens to be a Moms for Liberty activist. “All of it is shocking,” Roberts told us. “If you don’t want your teenager reading this book, that’s your right as a mom — and good luck with that. But you don’t have the right to say nobody’s kid can read this book.” This signals a new trend: Book banners are increasingly going after a wide variety of titles, including romance novels, under the guise of targeting “pornography.” That term is a very flexible one — deliberately so, it appears — and it is sweeping ever more broadly to include books that can’t be described as such in any reasonable sense. Martin County is where 20 Jodi Picoult novels were recently pulled from school library shelves. This, too, was largely because of objections from that same Moms for Liberty activist, Julie Marshall, head of the…