The bad press this movie is getting is heating up as more and more adoption groups and outraged parents voice their objections to this movie.
I encourage people to contact Warner Brothers. More to the point, I encourage you to contact your local theater and request that they do not screen the movie. Getting many people to contact the theater and to state that you will not attend that theater as long as that movie is showing may get them to not screen the film.
Editorials in the local paper would also help.