The "Overton Window" is a concept by Joseph Overton who was a libertarian think tanker who popularized the concept in the 1990's. His concept involved looking at a policy spectrum that went from extreme to benign. He believed that only a portion of this policy spectrum was within the realm of the politically feasible at any time. He said that "regardless of how vigorously a group may campaign, only policy initiatives within this window of the politically possible will meet with success." In this episode, Drew and Alex talk about how this concept is really about political boundaries and what is acceptable in the current political landscape. They talk about how both the left and the right have expanded the window. Sometimes expanding the Overton Window leads to progress, but other times it can lead to hate, violence, and the rise of oppressive regimes.