Interestingly, practically all of those "open spaces" were clearly marked "gun-free zone". Some such nutjobs have been clearly documented as choosing those area

Interestingly, practically all of those "open spaces" were clearly marked "gun-free zone". Some such nutjobs have been clearly documented as choosing those areas over "more desirable" targets precisely because of the signage. Of the few cases not so designated, many have been stopped by other armed citizens before the intended massive killing spree proceeded past the first couple shots. ETA: Yesterday, http://www.cnn.com/2017/03/16/europe/france-high-school-shooting-grasse http://www.cnn.com/2017/03/16/europe/france-high-school-shoo...