Whether a particular comparison to Hitler or Nazis is rhetorically persuasive or is excessive (and thus weakens the impact of appropriate comparisons) is not a matter of hard, objective fact (validity, or truthfulness) but, at least in instances where reasonable minds might differ, a matter of subjective appropriateness and degree.

Several years ago the New York Times published a letter of mine, but edited out my correct use of the subjunctive case. When I questioned the editor (very politely and deferentially), he explained the subjunctive is no longer used in modern English except for an assertion contrary to fact (e.g., "If the Earth were flat, then ...")—which my subjunctive usage in the letter happened to be, although I continue to use the subjunctive wherever it is grammatically correct. Was I asleep when the subjunctive case was ripped from my language? Did the Anglos [sic] and Saxons posthumously defeat the Romans and seize linguistic dominance while I was away?

When I was in 4th grade, the teacher taught the class said that it was incorrect to begin a sentence with because. I asked why, and gave her a grammatically correct example of the usage. She acknowledged that my example was correct, but said one should not begin a sentence with because because that often leads to error (she was probably concerned about sentence fragments, e.g., "Because it rained."). To this day, probably because of my resentment of the teacher dumbing down the language, I begin a disproportionate proportion of my sentences with because.

Peace.  (Talk)