A 17-year-old wielding an axe attacks passengers on a German train. Three police officers fatally shot in Baton Rouge, La. Those are just some of the stories that dominated news coverage and social media feeds and the fact that they follow weeks of seemingly endless violence — from Baghdad to Dallas — has left many people wondering what is happening in the world. It's not as if bad news and violence are anything new. But the way it affects us has changed with our growing reliance on smartphones, says Fuyuki Kurasawa, an associate professor specializing in global digital citizenship at York University in Toronto. READ MORE