Huntsville City Schools (HCS) paid a former Federal Bureau of Investigations agent $157,000 to direct security last year, but critics contend that the system he implemented is designed to monitor the social media activity of black students, according to AL.com.

Chris McRae, the agent in question, was brought in to oversee the Students Against Fear (SAFe) program, which works by allowing students and teachers to provide anonymous tips to security personnel, who then scour social media sites like Facebook to determine the credibility of the threat.