The state is following federal guidance by pausing the use of the Johnson & Johnson vaccine, as officials investigate six blood clot cases that may be tied to the vaccine. Governor Gavine Newsom said he doesn't anticipate this affecting the state's vaccination or reopening timeline.Whistleblower Sophie Zhang details how authoritarian governments used Facebook to target activists and journalists, and spread misinformation campaigns, and the company did little about it.Guest: Julia Carrie Wong, Senior Technology Reporter with The GuardianThe San Francisco-based online newsletter platform Substack has become a popular home for many well-known journalists who’ve abandoned mainstream media outlets. But now, the company's choice of some of the writers it’s invited aboard has come under fire. Reporter: Rachael Myrow, KQED Learn more about your ad choices. Visit megaphone.fm/adchoices