Close Examining Mass Shootings In The United States According to a Harvard University study, between 2011 and 2014, there was a mass shooting occurring on average every 64 days. But in the 29 years prior, mass shootings took place about every 200 days. wltx 11:08 PM. EDT June 14, 2017 TRENDING VIDEOS Confederate Flag, Marker Stirs Controversy Man and Woman Found Dead Identified Reconnecting With Family in Puerto Rico Possible Higher Rates If santee Cooper Sold Shooting survivors want more than prayers for Las Vegas Woman receives surprise delivery of oxycodone After Vegas Shooting, WhereDo We Go Now Former FBI leader offers insight into Las Vegas shooting Police: Woman Shot, Killed Her Husband Lee Brice: "Country Music Will Rise Above" More Stories Richland Deputy Hit by Officer's Car During Walmart Chase Nov 22, 2017, 5:03 p.m. Soldiers Don't Miss Out on Thanksgiving Meal Nov 22, 2017, 6:50 p.m. NFL's Josh Norman Sharing His Blessing with SC Churches Nov 22, 2017, 6:33 p.m.