Michael Moore has long been a critic of the government. Many criticize him for his moviemaking techniques which take bits and pieces of things to make his points. They argue that his films such as Fahrenheit 911 employ excerpts out of context and don't really contribute to a thoughtful analysis of issues.
Nevertheless, he has his fans. He represents viewpoints shared by many in the US about a variety of topics. In this clip, he looks at the US Patriot Act which followed as a response to the terrorist attacks on September 11th, 2001.
Think about how this contrasts with the presentation of the Alien and Sedition Acts issue in the film John Adams.