The  author Michael Martin analyzes data gathered from 48 mass shootings that have occurred since Columbine to determine what can be learned from these tragedies, including whether a reduction in magazine capacity or the banning of any class of firearm, would have changed the outcome.

Martin also looks at whether “gun-free” zones impact the planning of these mass murderers, whether victim response at any mass shooting has made a difference and whether “universal background checks” or other proposals by gun control advocates stand a chance of stemming the current trajectory of these shootings.
Martin summarizes this data with a comprehensive plan designed to eliminate the scourge of these shooters once and for all.