We know that journalism can impact attitudes and action. But it's rare to get concrete proof of that, as I did recently after publishing a blog post about the anti-Semitic content of traditional Good Friday performances of Passion plays and Passion musical compositions, many dating back to the Middle Ages.

Given this horrible history, it's no surprise that for centuries Easter posed great danger for Jews. Good Friday church services have traditionally included passion plays that reenact the trial and crucifixion of Jesus.

It's immediately clear that "Jesus Christ Superstar" is an equal opportunity offender. Jews were understandably concerned about the way in which they are portrayed, but Christians also took offense.