This year has the nation on edge and looking for levity. It’s worth remembering, though, that a punchline’s humor is often found in its truth-telling. Jerald Walker, professor of creative writing at Emerson College, joins guest host Courtney Collins to talk about his book of bracing – and often funny – essays. “How to Make a Slave and Other Essays” is a finalist for the 2020 National Book Award in nonfiction.