politics Jason Van Dyke guilty of 2nd degree murder and aggravated battery in shooting death of black teen Laquan McDonald Xeni Jardin

guns Walmart announces major plans to scale back gun sales Gina Loukareas

Business Dystopia watch: American schools are installing anti-shooter smoke cannons and bulletproof doors Cory Doctorow

shootings Gun injuries go down by 20% during NRA conventions Clive Thompson

nra "Good guys" with guns cause panic, delay investigation into Walmart shooting Jason Weisberger

politics America's biggest health crisis? Not gun violence but porn and gays, GOP says Xeni Jardin

videos Colorado school district wants to arm security staff with military-style rifles Cory Doctorow

guns Why isn't Silicon Valley trying to fix the gun problem? David Pescovitz

Science Science and gun violence: why is the research so weak? Maggie Koerth