I really hope you're wrong, I hope that the pastor uses the Jews of ancient Palestine as a mirror for ourselves, and what would we do in the same situation? Would you stand against an enraged crowd, possibly alone, or slink back to the shadows in shame and watch a good man be tortured and killed?
Then again he might be an idiot after all, but I still hope.
This isn't sermon - this is sign for drivers-by. And purpose of sign is to create anti-Semitism.