Authorities from the University of Texas at San Antonio are investigating a viral video showing an African-American student being escorted out of a classroom by the police after a professor allegedly reported her for having her feet on a chair.“So this happened today in class, a girl had her feet up and the professor called the police after calling our class uncivil,” a Twitter user, who posted a video of the incident on Monday said, adding that the Biology professor Anita Moss had called the officers to escort the student out.