Michael Smerconish speaks with University of Pennsylvania historian Jonathan Zimmerman about "Free Speech: And Why You Should Give a Damn," co-authored with Pulitzer Prize-winning cartoonist Signe Wilkinson. They explore how free speech—once a cornerstone of liberal activism—has become politically polarized, with conservatives now claiming its mantle. Zimmerman argues that cultural shifts, campus controversies, and the rise of “cancel culture” have reshaped public discourse, often discouraging open debate. The conversation examines the tension between free speech and social justice, the impact of self-censorship, and why reclaiming robust dialogue is essential to addressing inequality. Original air date 8 April 2021. The book was published on 1 April 2021.