This week's show: Why live theater still matters: we talk with Shanara Gabrielle, who’s directing the Theatre Alliance production of The Cradle Will Rock; labor historian Dana Frank takes a new look at working-class activism during the 1930s from the perspective of our own time, in What Can We Learn From the Great Depression? Stories of Ordinary People and Collective Action in Hard Times. She’ll talk with Bill Fletcher Jr. on Oct. 8 at the K Street Busboys and Poets.