Meet the "Angels of Silence." Adam Clark Estes reports on a project in Oaxaca, Mexico, employing the deaf to observe surveillance footage. It's especially interesting because surveillance of image and sound are legislated differently, meaning the need for experienced "silent observation" is hard-coded into the law.
Estes directs readers to additional coverage at theatlanticcities.com ("The video footage is silent, and deaf monitors are both capable of reading lips and less easily distracted than officers who can hear by other things happening in the command center") and theglobeandmail.com ("Members of the newest police force in the colonial city of Oaxaca can’t hear or speak"). Here's earlier reporting from this time last year: infosurhoy.com.