Speaking as a Jew, I get triggered by Holocaust imagery and mentions too. When we see Swastikas, we think someone is planning to kill us. Nazi comparisons suggest that people don't care if we live or die. We don't think of Nazis, Hitler or Swastikas as clever rhetorical devices, in our collective memory they represent mortal threats. The fact that people defend the comparisons suggests they don't have the courtesy to respect our wishes, humanity or lives.