Where have we seen this before?????
The muslims invented that . . . down to the color yellow.
Muslim countries
The use of distinctive clothing or marks for Jewish and other religious communities has been traced by historians to ancient times.[2] In the early Islamic period, non-Muslims were required to wear distinctive marks in public, such as metal seals fixed around their necks. Tattooing and branding of slaves and captives were widespread in the ancient world. However, Islam, like Judaism, forbids permanent skin markings. In consequence, lead or copper seals were used to mark non-Muslims and slaves in the Islamic world. [3] Likewise, they were not allowed to wear colors associated with Islam, particularly green. [4] The practice of physically branding Jews and Christians appears to have been begun in early medieval Baghdad and was considered highly degrading. [5] According to Bernard Lewis, Christians and Jews were forced to wear special emblems on their clothes. The yellow badge was first introduced by a caliph in Baghdad in the ninth century, and spread to the West in medieval times. Even in public baths, non-Muslims wore medallions suspended from cords around their necks so no one would mistake them for Muslims. Belts, headgear, shoes, armbands and/or cloth patches were also used. Under Shi’a rules, they were not even allowed to use the same baths [6] In 1005 the Jews of Egypt were ordered to wear bells on their garments.[7]
http://en.wikipedia.org/wiki/Yellow_badge