Overton window
In 2010, Glenn Beck wrote a novel called The Overton Window based on conspiracy theories. When talking about it on Fox News, Beck said that the Overton Window meant things that politicians were willing to support and that the Overton Window changed when politicians decided that some ideas should become taboo or that some taboo ideas should become mainstream. The Mackinac Centre criticized him for saying this and said that it’s not politicians who change The Overton Window (at least it usually isn’t), it’s society that changes and the politicians change with it.