This week I learned that the Nextdoor app added nudges to the user experience to reduce racial profiling and online bullying. The app prompts users who appear to be reporting a crime to consider whether what they're seeing is really a crime (walking in a neighborhood isn't, for example) and to not rely on racial description in their reports. Nextdoor encourages users to provide more unique and complete details, such as clothing, tattoos, and facial hair.