The Los Angeles County Sheriff’s Department conducted a secret test of mass surveillance technology, organizing round-the-clock surveillance with drone for the territory of the whole city.

The incident took place in 2012, but the issue has become known just now.

Compton has a total area of 26 km2. It is possible to cover such an area completely with a high resolution camera with a single drone. Police received images in real time and were able to zoom in anywhere within the city of Compton. In other words, the police could easily track the movement of every citizen in the city, but residents were unaware of it.