This is kind of a stupid take on the movie. The main message of the movie is that citizenship carries with it not only privileges but also responsibilities. Granted the action is so over-the-top it's sometimes comical, but if the director intended it as a satire, it just goes to show once again that leftists can't do satire. This was supposed to equate American liberty with fascism or something? Give me a break.
The author obviously did not read the (Heinlein) book.