Renee Hobbs argues that schools must teach students how propaganda works so that they can better understand the messages they see around them. In an interview with Kappan editor Rafael Heller, she describes how propaganda -- and instruction about it -- has evolved over time. Although there have been periods where it was discussed extensively in schools, but the Common Core moved it to the back burner, Hobbs explains, but now teachers and young people alike are taking an interest in these subjects once again.