 Most of the time that term is applied to things that are uncomfortable but true. It's often called dangerous to point out the racial disparities in violent crime statistics, for example. But that can't be dangerous because it's A, true, and it's B, not the sort of thing that once acknowledged will plausibly bring harm to any person or group. But the left's decade-long campaign to label Trump a Hitlerian dictator who wants to destroy democracy,