Stopping bad guys with guns requires good guys with guns. Richard Epstein writes:
Today, most of the proposed solutions are top-down. They seek to prevent violent individuals from getting their hands on guns, often forgetting that determined killers can resort to cars, bombs, and even knives. My approach is the opposite. Any mass killer is a random outlier whom it is rarely possible to identify in advance. I think that it is impossible to do anything more that will prevent these people, or indeed anyone else intent on wreaking havoc, from obtaining weapons.
The only strategy that has a fair chance of success to reduce, but never stop, all mass killings, starts from the opposite end. It is beyond dispute that gunmen utilize the element of surprise. It has long been known that most of the death and destruction of a mass shooting takes place before any police or security team has time to arrive. Killers open the door and they start shooting: no warning, no mercy, no pause. Speed is the essence of any police response. Better that a single officer enter the fray immediately than wait even ten seconds before reinforcements can pitch in.
Yet the police cannot be everywhere, so they need reinforcements before they arrive, not afterwards. One way for this to work is to make sure that in every mass gathering there are already present trained, armed individuals who can confront any assailant the instant an attack begins. To achieve that goal, there must be an immediate reversal of current policy and the implementation of something similar to current Israeli practice, which states simply enough: “All off-Duty Combat Soldiers Must Carry Their Weapons.” The United States should adopt a similar policy, which applies to the military, police officers, and others who carry and use weapons as a routine part of their job. […]
The immediate response from armed individuals already on the premises could do much to deter crazed individuals from making these attempts. They could engage in return fire that could kill or wound the attacker or induce him to flee. And the benefit of this boots-on-the-ground policy is not limited to mass shootings.
[Richard A. Epstein, “Israeli Lessons for Mass Shootings,” Hoover Institution, August 12]