It was very much so from the perspective of Jewish viewers. On about.com 29% found it antisemitic while 34% did not (open poll--non official), still a significant number (for gen pop)
"It's conventional Christian theology that the temptation to do evil (or Satan himself) is everywhere. But many Jews saw Satan acting through a specifically Jewish gathering, yet another in a long line of Christian libels. For Jews, this film was very close to the traditional passion play so often used to incite anti-Semitic violence. Jews also noticed that when God becomes angry at the killing of Jesus, he doesn't wreak havoc on the Roman forum or Pilate's house. He doesn't even confine the damage to Herod's palace and Caiaphas's house. He destroys the temple.

Jews don't understand why Christians don't seem to get this. They tend to think that Christians are either blind to the movie's message, or insensitive to the feelings of Jews"
Gibson believed in the libel of the Jewish world conspiracy. Shortly thereafter his father, Hutton Gibson, a self-proclaimed Holocaust denier, gave an interview. Commenting on his father, Mel Gibson said,
'My dad taught me my faith, and I believe what he taught me. The man never lied to me in his life.'"[SIZE=-2]7[/SIZE]
Only a very small section of conservative Jews tended to find the film unoffensive.
Furthermore Roger Ebert and David Asen said it was [paraphrase]"The most violent film they had ever seen". I do not care if you go with your parents, I have seen clips of the film since and it is inappropriate for children.period.
The fact is Mel Gibson choose a film and text that has been largely used throughout the middle ages and holocaust (by Hitler...who actually hated all religion) to insight hatred and persecution against the Jews
And quit playing this liberal media, persecuted Christian bullcrap...it's old
For all these well founded reasons I refuse to support his movie.