In attempts to prevent violence in schools, some districts nationwide are taking steps to monitor students' online activity and social media posts. Spurred in part by the school shooting in Parkland, Fla., a year and a half ago, schools nationwide are collaborating with law enforcement in new ways in efforts to avoid these kind of tragedies. Investments are being made in new security technologies that can scan social media posts, school assignments and even student emails for potential threats. Supporters say such steps make students safer, but some others have expressed concern for student privacy. Critics also worry that social media monitoring could make criminals out of students who are just having typical kinds of teenage social and emotional problems.