Look at your Hasidim today with their red hair, blue eyes etc. Look at your Ethiopians. Your fantasy of a semitic nation is not seen in the rainbow nation of Israel today. I wouldnt underestimate the Khazar factor- it may well have a large influence. Semitic dosen't mean Jewish and Jewish dosen't necessarily mean semitic- anti-semitism was synonymous with anti-Jews because in Europe there weren't any other semites wandering around in large groups so the name stuck. Anti-Jews would have been far more accurate but at the time it wasn't necessary to differentiate. Ultimatly being Jewish is about belonging to a secular or religious cult, either way its a cult and like any cult you are either in or you are out- group first, religion second so you can be secular but still be part of the cult unless you leave completely.
Jury convicts white supremacist of killing 3 people at Kansas City-area Jewish sites (AP)
from the article: First and foremost a Jew