crypto judaism has been a term since the 15th century in spain europe and persia. it's nothing new. Today, hidden jews are being hunted down in laboratories and hospitals and military facilities because of vmat2

. In Iran, a large community of crypto-Jews lived in Mashhad, near Khorassan, where they were known as "Jedid al-Islam"; they were mass-converted to Islam around 1839 after the Allahdad events. Most of this community left for Israel in 1946. Some converted to Islam and remained in Iran.[15][16]