Zulyema Tang-Martinez wanted to join the protests sweeping the U.S. this year. She has a long record of activism dating back to her days as a student at Berkeley in the 1960s and 70s. But the University of Missouri-St. Louis biology professor emeritus is now 75. She has health conditions. How could she join in without taking unnecessary risks? The solution for Tang-Martinez was a car caravan — and on June 20, it found big success. She joins host Sarah Fenske to to talk about that protest, and marching for justice when you probably shouldn’t be marching at all.