How can I get a copy?
Right now, you can't. PBS refuses to air it. PBS refuses to release it to the producers so that they can show it.
You can’t (that I know of). PBS owns it.
You can sign a petition here. As a taxpayer, you helped to fund the project that PBS is refusing to let you see...
http://www.freethefilm.net/home.html
The producers should ‘accidentally leak’ a copy of it to veoh.com... (Veoh is kind of like youtube without the technical restrictions).
Here’s another article on this PBS program posted earlier, by Roger L. Simon
http://www.freerepublic.com/focus/f-news/1833029/posts