Citizen–the crime tracker app that originated in New York City– announced in a blog post that it has expanded to Baltimore. The app allows users to receive real-time crime and emergency notifications in their communities. The app churns out nearly 2 million safety alerts each day to its users, and now with Baltimore added to its list of cities, those numbers are expected to grow. Citizen, formerly known as Vigilante, currently has 600,000 active users. Last year, the app took its talents to San Francisco. Although there have been instances where the app has helped people avoid danger and find missing family members, some are worried that the app will amplify racial biases, especially in the Baltimore area. Citizen works to prevent this by excluding information that would identify victims or complainants in notifications. When information in unconfirmed, Citizen notes the alerts as an “unconfirmed report.” The alert does not include generic suspect descriptions. “For example, Citizen...