Online trolls and fascist chat groups. Controversies over campus lectures. Cancel culture versus censorship. The daily hazards and debates surrounding free speech dominate headlines and fuel social media storms. In an era where one tweet can launch — or end — your career, and where free speech is often invoked as a principle but rarely understood, learning to maneuver the fast-changing, treacherous landscape of public discourse has never been more urgent. In Dare to Speak: Defending Free Speech for All (Dey Street), PEN America CEO Suzanne Nossel, a leading voice in support of free expression, delivers a vital, necessary guide to maintaining democratic debate that is open, freewheeling but at the same time respectful of the rich diversity of backgrounds and opinions in a changing…