I have been watching, listening to, and reading all the multifarious mental junk that has been on offer on NPR and on CNN and on Fox, and at The Times and The Post and tutti quanti, and witnessing all these sudden scholars of terrorism, ranging from tough-guy ex-FBI agents to left-wing Democrats alike, offering every conceivable variety of obfuscation, misdirection, incomprehension, sheer nonsense — such as placing blame for the San Bernardino jihad terror attack on the “gun lobby.” This is because in this case the Muslim murderers in question used guns, so let’s all concentrate on the instrument used...