Public impeachment hearings begin this week. We tell you who’s taking the stand and how to tell them apart using some high-art, elevated cultural touchstones. A public defender supported by the co-founders of Black Lives Matter was elected as San Francisco’s new DA. We talk to former public defender and politician Tiffany Cabán about what it means to be a prosecutor who runs on ending mass incarceration. And in headlines: the women who inspired “Hidden Figures” are honored by Congress, Dion Waiters got too high, and Sesame Street celebrates 50 years of puppets and letters.