They Did What? - Misplaced Modifier

In a lecture by Steven Dacey on the "Secular Conscience" at the Upper Midwest Honors Conference  

"... the genocide in Darfur, in which white evangelicals have taken a leading role."

I don't remember the whole sentence, but the gist of it was that white evangelicals were fighting to stop the genocide in Darfur. The way he said it, however, made it sound like they were leading the genocide, not stopping it. One needs to be careful where one places modifying phrases, in order to avoid confusion.