Roseanne’s tweet. NFL players kneeling. The President blocking people on Twitter. These stories are all about the same thing: what is free speech? Who gets to decide? And what happens when one person’s speech makes another person feel unsafe? Sam talks to Nadine Strossen, a law professor and former president of the American Civil Liberties Union, about her new book, Hate: Why We Should Resist It With Free Speech, Not Censorship.