If you have been around stars you quickly learn they all need security. This movie is more likely to heighten the risk to Mel and company because of the subject matter. It could be anyone, even a Jew. G-d willing, not a hair on anyone's head will be harmed.
Similarly, Abe Foxman probably is more at risk as well.
There is a wider tapestry being woven here. There is a real and present danger to Jews in Israel and around the world. The larger risk is that an evil spirit will enlist more of those who claim the name of Christian in a new crusade against the Jews.