The MPAA has given the film an R rating because of the use of the F-word in one sequence of the film.
As NG noted, why aren't "We" ripping HRC, GLAAD, GLSEN, and PFLAG a new asshole.
GLSEN hasn't posted one damn thing about the movie; Nor has PFLAG. GLAAD posted an update on Katy's change.org petition but has not taken any action themselves.
As for the HRC, While they have an online petition, that's about the extent of their involvement.
The Katy who NG mentions is Katy Butler a teenager from Michigan who started the petiton to lower the MPAA rating to PG-13 so teenagers will be able to see the film without having to be "escorted" by an adult. Like that really happens in most movie theaters anyway as the aforementioned are more interested in tickets sales than enforcing MPAA ratings.
Bully will open in theaters March 30. To voice your opposition to the rating of R, I prefer the more direct route rather than, albeit with best intentions, silly Internet petitions.
You can contact the Motion Picture Association of America by calling:
Washington, DC - (202) 293-1966
Los Angeles - (818) 995-6600
New York City - (914) 333-8892
Chicago - (708) 660-0481
As one commenter wrote at the YouTube page for the trailer of Bully:
FUCK KONY 2012 !!! This is the real movement.