I clearly remember watching this movie a few years ago. I think its set in a euopean country, maybe Germany, but i believe it was an english movie. It may be set in the future.
The premise of the movie is that illegal immigrants are hunted down by participants, i believe of some game show. 2 or 3 locals, help one of the people being hunted, attacked, and end up being hunted themselves.
I think it ends with 1 or 2 of those people becoming 'hunters' themselves. I think it was one of those independant type of movies.