Consider three of the biggest developments in our politics right now: We just learned that the economy lost 92,000 jobs, a capstone to a terrible year in terms of job creation. President Trump has fired widely despised Homeland Security Secretary Kristi Noem, a key architect of his mass deportations. And reports are indicating that the killing of scores of Iranian schoolchildren might have been the handiwork of the United States. What links all these things? In addition to the massive human toll...