For years now, conservative activists have decried “cancel culture,” the phenomenon of suppressing any speech or writing that offends liberal sensibilities. And it is, in fact, an alarming and annoying trend from the left. But in Wentzville today, conservatives have provided a disturbing example of what might be called the original cancel culture: book banning. The Wentzville School Board last week banned from its high school libraries a bona fide literary classic, the 1970 novel “The Bluest Eye,” by the late Nobel laureate Toni Morrison. The book tells the story of a young Black girl in post-…