Title of video in YouTube: "BOOM! Charleston Shooting Happened During Federal 'Active Shooter' Drill"
YouTube user channel: "DAHBOO777"
Title of video in YouTube: "Charleston Shooting Hoax Was a Confirmed Active Shooter Drill (Redsilverj)
YouTube user channel: "TeamWakeEmUP"
False flag? Charleston shooting happened during federal active shooter drill
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See at DHS website here: