https://phys.org/news/2018-05-aclu-amazon-shouldnt-face-recognition-tech.html

But privacy advocates have been concerned about expanding the use of facial recognition to body cameras worn by officers or safety and traffic cameras that monitor public areas, allowing police to identify and track people in real time.

The tech giant's entry into the market could vastly accelerate such developments, the privacy advocates fear, with potentially dire consequences for minorities who are already arrested at disproportionate rates, immigrants who may be in the country illegally or political protesters.