The mass slaying of 19 schoolchildren and two teachers evokes a pain that is almost too hard to express. Compounding this pain is anger — anger at knowing that the deaths of these children, the families in Buffalo, New York, the churchgoers in California and the shootings that happen seemingly every day in Chicago are preventable. My outrage is fueled by frustration with elected leaders who choose to ignore the will of the people to act on gun violence. It is a frustration that sometimes allows resignation to set in. Understandably, it is hard to be hopeful that things will change when, nearly…