What's the Point of Batson Challenges?

The Christmas episode of the Citizen's Guide to the Supreme Court takes a few detours before getting into Foster v. Chatman, including playing Price is Right with the Dean and Deluca catalog and talking about why Brett hates tiny airplanes.  Once that's out of the way, Brett and Nazim discuss the merits of the Foster case and read emails from people within the criminal justice system about how effective the Court is at resolving racial discrimination in the selection of a jury.