"How many students of color must be brutalized by police officers in their schools before we recognize the pattern?" she said in the statement. "We saw this with 17-year-old Brittany Overstreet in Tampa, Florida, who was body-slammed and knocked unconscious by a school resource officer; in Baltimore, Maryland, where a middle school student required 10 stitches after she was assaulted by a school resource officer; in Columbia, South Carolina, where a student was thrown across a classroom, handcuffed and arrested for using her phone during class; and now, in San Antonio.