By Jose Maria Alvarez, The Associated Press November 19, 2013 1:00 PM
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OAXACA, Mexico – Members of the newest police force in the colonial city of Oaxaca can’t hear or speak.
A group called the Angels of Silence operates the city’s surveillance cameras to look for crimes being committed on its streets.
Cynthia Zepeda, director of Oaxaca state’s emergency services, said the officers have a highly developed visual sense and are not easily distracted.
“They allow us to notice situations that maybe a person who doesn’t have that disability wouldn’t notice. They read lips and can perceive suspicious movements in people,” Zepeda said.