While this may (or may not) be the case, Jesus certainly didn't punish the entire Jewish Nation just because of a few rabble rousers...Jesus was rejected by the majority of the Jewish population...And as such, the Jewish population is going thru a period where the Truth is hid from them...
Would seem (to me) that while most Jews were not present at the conviction and Crucifixion, most did not oppose it...
And as such, I feel that while the group of Jews we not chosen by their peers to be present at the sentencing, they did however represent the indifference of the conviction of their fellow Jews...
Don't buy that. God accepts Jews as Christians now on exactly the same basis as anybody else. The Jewish nation is not being punished, except insofar as they refuse to accept the word of God.