Mythology Dies Hard
The lamestream media told you:
Taking guns away from the people will put an end to mass shootings. Don't look across the pond where "gun-free" Great Britain just had another mass shooting of unarmed helpless citizens.
The Uninvited Ombudsman notes however that:
A gunman was stopped by an off-duty police officer, out of his jurisdiction, at Salt Lake City's open public Trolley Square in 2007. Another shooter was stopped in his tracks at a church in Colorado Springs that same year, by a woman who had her gun with her. An armed customer at a restaurant in Anniston, Alabama prevented a mass shooting in 1999. An armed high school vice principal stopped Pearl, Mississippi gunman Luke Woodham. Two armed students stopped a gunman at the Appalachian Law School in 2002. Thanks to SAF for reminding me and providing this partial list.