1950 to 2010: Not One Mass Public Shooting Where Citizens Could Be Armed Prison Planet.com Posted on September 7, 2016 Posted in Aggregated No Comments Tagged with Prison Planet Breitbart | In other words, gun-free zones or gun-restricted zones were the targets of choice. Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email