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Why a developer created this app to alert ICE sightings

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.

03:27 - Source: CNN
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Why a developer created this app to alert ICE sightings
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