Apple is right to look after the privacy interests of its customers, and to assist law enforcement where doing so is not detrimental to those interests. And the U.S. government’s law-enforcement and intelligence operatives are right to do what they can to learn what can be learned from the communications of terrorists such as Mohammed Saeed Alshamrani. But they are the ones who have to do their job—it is not desirable that Apple should be deputized to do it for them, or that Apple should give them a master key to Americans’ private communications—because the U.S. government already has shown on many occasions that it simply cannot be trusted with such power……