Last week, PBS announced the cancellation of one of the television network’s longest-running children’s shows. After 20 years on PBS, “Caillou” will be going off the air. “Caillou” premiered in 2000 ...

So what is it that rankles Caillou viewers so? After all, the show seems inoffensive enough at first glance. Based on picture books by author Christine L’Heureux and illustrator Hélène Desputeaux, ...