According to a report from the American Civil Liberties Union, law enforcement officials across the country used special feeds of raw data, including location information, from Instagram, Twitter, and Facebook to track and monitor racial protests.

Article Source: https://www.buzzfeed.com/charliewarzel/law-enforcement-tracked-activists-using-twitter-facebook-and?utm_term=.ebo5ebEBwZ#.daLqJywmp5

Photo source: By Fibonacci Blue from Minnesota, USA [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons