Iran ≠ Nazi Germany, Yet
So it appears that early reports that Iran had passed a law requiring Jews to wear yellow bands and Christians to wear red ones were not accurate.
The National Post later cited experts saying that the idea of religious demarcation had only arisen in discussing a law defining Iranian dress code. The paper quoted an Iranian commentator who said the idea of external identification of non-Muslim minorities was only raised as a secondary motion.
So see, there’s nothing to worry about. They Iranians aren’t completely insane, yet. They are only insane as a secondary motion.