“Here’s a little mental experiment. Imagine, for a moment, that the Tsarnaev brothers, instead of packing a couple of pressure cookers loaded with nails and explosives into their backpacks a week ago Monday, had stuffed inside their coats two assault rifles—Bushmaster AR-15s, say, of the type that Adam Lanza used in Newtown. What would have been different?

Well, for one thing, the brothers would probably have killed a lot more than three people at the marathon. AR-15s can fire up to forty-five rounds a minute, and at close range they can tear apart a human body. If the Tsarnaevs had started firing near the finish line, they might easily have killed dozens of spectators and runners before fleeing or being shot by the police.

The second thing that would have been different is the initial public reaction. Most Americans associate bomb attacks with terrorists. When they hear of mass shootings, they tend to think of sociopaths and unbalanced post-adolescents. If the Tsarnaevs had managed to carry out a gun massacre unharmed and escaped, their identities unknown, would the first presumption have been that the shooters were Islamic extremists? Or would people have looked in another direction?”

Read it all: What if the Tsarnaevs Had Been the

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