Gary, I have a quite minute without the" moral patrol" watching. I do feel exactly what you are going through and being in the same position as you with a wife who is "possessed" you probabally know by now there is very little you can do about it. I have to keep trying to find the woman I married and not the moralistic policeman who she is turning into. I have noticed since my wife has been studying the bible, she has made more mistakes with worldly issues and is actually looking to me more with some issues... a bit odd actually.
Anyway, back to the film. I study media, TV and Film at college. The charicters in films always are architypical of steriotypes. Nothing damaging there, My son who is 6 years old watches some dodgy movies and he knows who the bad guys are... Christians are also guilty of this with their images of christ...he is always show wearing a beard and oddly enough portrayed as white..... How many Americans would shout that the film was racialist but would kick up if Jesus was shown as a black man??.
I haven't seen the film yet but just the impression I get from this dicussion , black people do practice voodoo magic,...check out some history books.
I do feel that if you have a conflict of opinion in a family between the parents, the children will feel it. Discuss some sort of censorship programme with your wife. I cannot offer any advice on this but I usually do things behind my wifes back. She goes to church we watch "Terminator Salvation" and it will finish before she gets back. Perhaps you will need to censor your wife, keep her away from the news.....I had a headache over the damned riots this last week... work of Satan or not I bet this subject will come up in church on Sunday!!!