#MassShooting2012SandyHookElementarySchool i.e. https://en.wikipedia.org/wiki/Sandy_Hook_Elementary_School_shooting #MassShooting2015CharlestonChurch i.e. https://en.wikipedia.org/wiki/Charleston_church_shooting / #IndivWhiteSupremacistDylannRoof #MassShooting2012AuroraColorado i.e. https://en.wikipedia.org/wiki/2012_Aurora,_Colorado_shooting #2018_MarjoryStonemanDouglasHighSchool i.e. https://en.wikipedia.org/wiki/Stoneman_Douglas_High_School_shooting #MassShooting2017SutherlandSpringsChurch i.e. https://en.wikipedia.org/wiki/Sutherland_Springs_church_shooting #MassShooting2017LasVegasMandalayBay i.e. https://en.wikipedia.org/wiki/Stephen_Paddock #MassShooting2018SantaFeHighSchool i.e. https://en.wikipedia.org/wiki/Santa_Fe_High_School_shooting #MassShooting2018CapitalGazette i.e. https://en.wikipedia.org/wiki/Capital_Gazette_shooting