It's important to make the distinction of dramatic film vs. documentary. As a dramatic film, which is what this film is, I thought it did a very good job of raising awareness and questions at a time when American's viewpoints about the LGBT community were rapidly changing. It's no secret that dramatic films "based on true stories" take liberties with the facts of the event the film is based upon. Film is a form of art that, at it's best, is designed to be thought provoking and challenge the viewer on their unconcious biases and prejudices that may or may not be valid.
Documentaries, when done well, present the facts of a situation and allow them to speak for themselves. I'm sure we've all seen the documentaries with obvious bias towards a given viewpoint on a subject, but they still aim to present real facts. Sometimes the facts they choose to present are picked carefully while others are ignored to further an agenda, but it is generally accepted that documentaries should not take any liberties with the facts that are presented in the film. The Laramie Project, if presented as a real documentary, would be an utter failure. However, the film is clearly not a documentary and should not be viewed as such.
Admittedly, the documentary format of this dramatic film could lead to some confusion among viewers. Just my thoughts, of course.