I've watched the trailer several times now. The first time, I was somewhat disgusted, not shocked, but the vomit-eating pigs are revolting, even if they're just doing what pigs would do. But then I was able to focus on the less obvious details. Who are the good guys and who are the bad guys? A cult? Why is the person being burned? Are they being sacrificed to gods to ward off evil, or is the person (supposedly) evil? The ritual creates a festive atmosphere among the local population, and the sight doesn't shock them. This time, everything seems to go wrong.
I felt like I'd stepped into a story from Clive Barker's Books of Blood. (I could reread them sometime. :)) I'm very curious to see what happens next.