Once an obscure legal doctrine, the practice of qualified immunity for police has drawn widespread public scrutiny in the past year. But as mainstream support for ending qualified immunity grows, police unions are amping up their opposition.  Guest: Kimberly Kindy, national investigative reporter for The Washington Post. If you enjoy this show, please consider signing up for Slate Plus. Slate Plus members get benefits like zero ads on any Slate podcast, bonus episodes of shows like Slow Burn and Dear Prudence—and you’ll be supporting the work we do here on What Next. Sign up now at slate.com/whatnextplus to help support our work. Learn more about your ad choices. Visit megaphone.fm/adchoices