As the sister comment alludes, how many of those 15 families are
in Iran?
My professor from my graduate program and his family are all Iranian. It's no surprise that they anti-regime: his wife's uncles were generals in the Shah's army, and were "disappeared" during the Revolution. They've been living in Japan for ~40 years. Hardly indicative of the opinion of the "man on the street" in Tehran, Isfahan, or Mashhad.
