On terrorism and rejecting ‘collective punishment’

After the horrific slaughter of nearly 3,000 people on 9/11, Americans were outraged. But that fury was directed outward; none of the perpetrators of those terrorist attacks had been an American citizen.
Things are different now. The past few years have seen incident after incident abroad where attacks are committed by people with ties — including citizenship — in the countries where they have murdered fellow citizens in cold blood. In 2013, Lee Rigby was hacked to death in London by two British men of Nigerian descent. The men responsible for the Charlie Hebdo murders in Paris this past January were born and raised in France. The ringleaders of the November's Bataclan attacks in Paris were French and Belgian nationals.