"Oakland police work after a school shooting April 2 at Oikos University in Oakland, Calif. Minutes after the shooting near the Oakland Airport and the supposed gunman on the lam, police Sgt. Chris Bolton used social media site Nixle to text a flurry of alerts to thousands through an emerging social media notification provider. ""Stay out of area,"" one alert said. ""Multiple shooting victims reported. Medical on-scene. Police are evacuating a nearby, affected business."" (ASSOCIATED PRESS / Noah Berger, File)"
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