Tech activist builds ICE-tracking app, faces job loss and threats
Mar 31, 2026 · Syracuse, NY, Mexico
Rafael Concepcion, a Syracuse University professor, developed DEICER, a crowdsourced mapping app that alerts users to ICE activity and agent locations. After the app gained 30,000 users, the Department of Justice pressured Apple to remove it from the App Store in October 2025. Concepcion lost his university job and received death threats but continued developing modified versions of the tool.
Sources
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