Every day, 100 Americans are killed by gun violence, and hundreds  more are injured. While most of these shootings are not in public  schools, children safety at school is a major concern. Gun control  measures are currently political non-starters and people are turning to  palliatives like bulletproof backpacks among other desperate solutions  in an attempt to protect their children. Sales of bulletproof backpacks have spiked almost 300 percent  following a  spate of school shootings and the recent attacks in El  Paso, Texas, and  Dayton, Ohio. Yet, none of the backpacks currently on the market would  have stopped a single rifle round coming from those gunmen.