Joshua Aaron, a musician and developer, created an app called ICEBlock, where people can post sightings of U.S. Immigration and Customs Enforcement officers across the country. CNN’s Clare Duffy speaks to Aaron about what motivated him to create the application and the efforts he has made to keep it accurate and prevent it from identifying users.

Joshua Aaron launched an app called "ICE Block" in April to help users stay informed about Immigration and Customs Enforcement operations. The app emerged amidst increased enforcement by the Trump