I'd suspect that OP was referring to the first century CE when Christianity could be said to have "won out" over Judaism, and yes then Jewish people often were racist in that way, just like people of most cultures then. Nowadays Jewish people aren't racist at all, or at least less so than the average American or European - and OP should have acknowledged and phrased that better.
Yes, I should have me it more clear that I am speaking of the fact that there is no philosophical reconciliation between Christianity or Judaism; rather than people being racist.
