For those who are paying attention and care at all about human decency, the Trump administration’s political chaos and social instability is a challenge that’s making some well-meaning people say some strange things. One of the strangest can be attributed to Obama derangement syndrome. O.D.S. sounds sensible enough. Barack Obama was a popular president. His approval rating was a solid 59 percent when he left office. That was just a little off from his high of 69 percent in 2009...