Deconstruction of the Hero Myth has been going on for a very long time. Every ancient culture had stories concerning the failures, foibles, and trials of their heroes. Many of these have come to be known as Cautionary Tales to warn and instruct each other as to what that society would and would not tolerate. (I've always wondered if the humanitarian pacifist was viewed as the ultimate criminal in Mayan culture, but I digress).
In 2007, three time Emmy award winning documentary filmmaker Matthew Ogens made Confessions of a Superhero, which is about four aspiring actors who make their living playing the roles of Batman, Superman, Wonder Woman, and The Hulk along Hollywood Boulevard.
The film is highly recommended as a cautionary tale of Cosplay taken way too far and overreaction by some very small-minded people.