EVERYONE knew he was innocent, and only one person on Earth did anything to prevent/delay/argue against the execution... and that was Pilate (plus his wife)... repeatedly. I will never understand the 2000 years of weekly hate poured on him for that.
Why does Caiaphias, the person who repeatedly started every call for the execution, get an eternal pass? Because his name is too tough?
I think that' because, as Pilate himself sid, "Do you not know that I have the power to release you, and the power to crucify you?"
It's because of his power ---plus the fact that he grounds the narrative firmly in history, not myth, because his name is in all the official records --- that he is singled out, I think.
G.E.M. Anscombe, Cambridge philosopher, says that after her study of multiple historic and cultural paradigms of morality, the one value she found was truly seen--- across the civilizations and the centuries --- as an "exceptionless norm" throughout history, is that everyone agreed that the judicial execution of a person known to be innocent, is always (exceptionlessly) evil.
It's accurate to blame Caiaphas as well, of course, as the instigator and Pilate's crime partner.
It's OK to blame yourself,and me too, since Jesus' death for us all was caused by the sins of us all.