It’s been nearly a year since Amy Cooper — upset that she had been asked to leash her dog in the Ramble — called 911 on bird-watcher Christian Cooper in Central Park, falsely alleging that her life was in danger. But such “Karen” incidents have not gone away. If anything, they have become a depressingly regular occurrence. So regular and unsurprising, in fact, that many of these videos no longer go viral. In the latest such case earlier this week, a 77-year-old woman, a resident of a retirement community in Wildwood, Fla., was charged with launching a racial tirade against...