Sad. A better answer to this would have been to do a flash back of Moses sprinkling the blood of the lamb upon the people as the covenant between God and his people were ratified--that would have put the saying of the High Priest into the right context.
From Gibson to Delete a Scene in Passion:
"A scene in the film, in which the Jewish high priest Caiaphas calls down a kind of curse on the Jewish people by declaring of the Crucifixion, 'His blood be on us and on our children,' will not be in the movie's final version, said the Gibson associate, who spoke on condition of anonymity.
The passage had been included in some versions of the film that were shown before select groups, mostly of priests and ministers.
'It didn't work in the focus screenings,' the associate said. 'Maybe it was thought to be too hurtful, or taken not in the way it was intended. It has been used terribly over the years.'
Jewish leaders had warned that the passage from Matthew 27:25 was the historic source for many of the charges of deicide and Jews' collective guilt in the death of Jesus. "