Indeed, this has been an excuse for many centuries. And it is (and always has been) completely illogical. The fact is that "they" spread Christianity all over the world.
Last I checked all thirteen apostles (the original 12, plus Paul) were Jews.
To me, any Christian who thinks it is so good that he/she is a Christian (and most do) should be thankful to those Jews who spread Christianity around the Roman Empire, as well as those Jews who spread it even further (that would be mostly Apostle Thomas).
Incidentally, it was Roman soldiers who drove the nails, none of whom was Jewish. I don't see anyone ever complaining about them. | 
