The docuseries “The People v. the Klan” tells the story of a Black mother’s quest for justice following the lynching of her teenage son in Mobile, Ala., in 1981. 6 and 7 p.m. CNN Oscar winner Mark Rylance (“Bridge of Spies”) discusses his grandfather’s time as a POW in the Pacific theater during WWII on a new episode of “My Grandparents’ War.” 8 p.m. KOCE A new mother wants her baby back, baby back, baby back in the thriller “Beware of the Midwife.” With Mouna Traoré and Raven Dauda. 8 p.m. Lifetime Advertisement “The British Academy Film Awards 2021,” a.k.a. the BAFTAs. 9 p.m. BBC America