When author and illustrator Michael Willhoite’s book Daddy’s Roommate hit the shelves in 1990, the blowback was unrelenting. The book, which tells the tale of a gay couple raising a son in a loving household, became the target of infuriated activists, including one Oregon man who characterized it as evidence of a “militant homosexual agenda.” On a 1992 Larry King Live segment, a concerned guest denounced the book for its “explicit pictures of two men hugging each other.”…