The fact that Nazi comparisons are so demonstrably false means that those who resort to such comparisons are actually helping Trump and his supporters defend objectionable actions, such as the harsh realities of the child separation policy, or his defenses of totalitarian leaders such as Kim Jong Un.

The problem with comparing things to the Holocaust is that very few events in world history, if any, are comparable to the Holocaust, so by resorting to such comparisons, critics are lowering the bar for Trump and his defenders.

Instead of defending the merits of a given policy, defenders can distract from the issue by swatting away unhinged Nazi Germany comparisons.

A world in which all Trump supporters have to prove is that his policies are not akin to Hitler is a world in which it becomes easier to get away with morally indefensible policies just because they still come up well short of Nazism.