When extremist content meets glorified violence online, communities pay the price

USA TODAY - For more and to sign up click here Oren Segal, opinion contributor The first weeks of school should be filled with jitters, anticipation and fresh starts. Instead, in Evergreen, Colo., they were filled with grief and fear. A 16-year-old opened fire at Evergreen High School, wounding two classmates before turning the gun on himself. Deadly school shootings in the U.S. are tragically common, but they…