https://www.techdirt.com/articles/20200821/14560545162/content-moderation-case-study-nextdoor-faces-criticism-volunteer-moderators-over-support-black-lives-matter-june-2020.shtml

Summary: Nextdoor is the local “neighborhood-focused” social network, which allows for hyper-local communication within a neighborhood. The system works by having volunteer moderators from each neighborhood, known as “leads.” For many years, Nextdoor has faced accusations of perpetuating racial stereotyping from people using the platform to report sightings of black men and women in their neighborhood as somehow “suspicious.”

— Nextdoor (@Nextdoor) May 31, 2020