Critical mass theory loosely applied in a social context means that at some point when a sufficient number of people adopt or accept a new idea, then a change happens. I wonder what the number of children murdered in their classrooms has to be, or what number of worshippers in a mosque, synagogue, or church murdered has to be, or how many mass shootings across America have to happen before this country decides to change? Or, is there no number? If not, why? Respectfully, Rodney White