The reliability of genetic tests aside, I can see a number of people posting DNA results, here and elsewhere, purporting to show that they are in some sense 'Sephardi' or 'Jewish' regardless of any of the traditional markers of identity; belief, community, family culture and history, etc. And regardless of the fact that their genetic make-up is majority *non*-Jewish. There seems a certain irony in this because it was the Inquisition that changed the previous practice of the Church, and the common practice of other faiths, that conversion away changed the person's identity (this is not an argument of halacha, but the historical recognition that former members of Israel have left and been assimilated), and substituted the racist idea that a stain, a mancha, remained no what, that the person was indelibly marked with Jewishness. Even if the Jewishness is seen positively, is this not a dangerously racist discourse that genetics is developing? Discuss.