Not so sure this works out that way.
The crowd at the governor's palace was not necessarily a representative sample of the Jewish populace. It would have been extraordinarily foolish of the Jewish leaders to not have as many of their henchmen as possible in this crowd. The remainder would have probably been largely city rif-raf. As in today's city mobs, most "solid citizens" are busy elsewhere with their lives.
And even those who were not predisposed against Jesus might have been easily swept up in the peer pressure of a mob setting rather than making a concious decision to reject Him.
I doubt that interpretation. Remember during the cruxifixion, the crowd, which was not just a hand-picked palace crowd anymore, was going after Jesus’ supporters. They spotted Peter and he felt intimidated enough to deny he knew Jesus. If the mob wasn’t against Christ, that makes no sense.
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...