It is not about "race" of the people, It's about the facts, the fact is that Jewish Religion Leaders were primarily responsible for Christ’s crucifixion. Also accusers of Christ were also Jews according to the Gospel story, they were. The Jews insisted, "we have a law, and according to that law He (Jesus) must die, because He (Jesus) claimed to be the Son of God." When Pilate (Roman Leader) heard this, he was even more afraid.
I'm sure the Jews today would understand what we mean by what we say. We are not trying to humiliation the whole natural of the Jews. Hope that you do understand also.