Banned for they are an ethnicity. Learn the definition. When breeding takes place only within your own kind, you become different from the rest. Throughout time, Jews and those that believed in Judaism were seen as lesser people and therefor forced to only breed within their own collective groups forcing certain genetic characteristics to propagate throughout the group. Should a person get a DNA test to find out "Who they are", in addition to knowing things like sub Saharan African, Central Asian, Nordic European, Native Southwest American, etc., Jewish is an identifiable tag. Throw that into the mix with the facts that they have their own culture, their own foods, their own language, their own entertainment, etc., it becomes even more difficult to say they are not an ethnicity. Granted, it's an ethnicity based on religious beliefs and views, but then again, so were the Incas, Mayans, and Aztecs, as well as many European and Asian societies of old times.