for Oliver Stone's 1991 film JFK, even appearing in two brief cameo roles: as a Parkland doctor working to save the President and as the courtroom projectionist showing the Zapruder film during the Clay Shaw trial in New Orleans. In 1989 Groden co-authored with Harrison E. Livingstone the book High Treason: The Assassination of President John F. Kennedy & the Case for Conspiracy (also referred to as High Treason I). High Treason spent five weeks on the New York Times Best Seller list for paperback non-fiction. During the O.J. Simpson civil trial, Groden appeared as an expert witness and testified that a 1993 photograph of Simpson wearing Bruno Magli shoes at an NFL football game was a forgery. Even after 30 additional photos by a different photographer captured on the same day of Simpson wearing the same clothes and shoes surfaced, Groden still maintained that the original photograph was a forgery. Lacking certifications from professional organizations, Groden admitted his photography training relied on his experience as a professional photo lab technician. Groden sued Random House over a 1993 New York Times advertisement for Gerald Posner's book Case Closed in which Groden was featured along with other conspiracy theorists and declared "guilty of misleading the American public." The U.S. District Court issued a summary judgment and dismissed the case. Groden has stated that his next book, JFK: Absolute Proof, documents his interview with a Dealey Plaza witness who was standing with Lee Harvey Oswald on the second floor of the Texas School Book Depository when they both heard shots being fired outside. Video documentaries he has released are JFK: The Case for Conspiracy: Assassination and Medical Evidence, The Assassination Films: The Case for Conspiracy, Volume II, and The Killing of a President: A Video Magazine. Free speech suits the city of Dallas had charged Groden with illegal activity 82 times related to his sharing information near the place of the Kennedy assassination. The court has found in favor of Groden in all of those lawsuits. One motivation for the city bringing the suits is a city planning effort to prevent anyone from encouraging visitors to recognize the site of the assassination as a tourist destination. Groden was arrested in Dealey Plaza on June 13, 2010, and initially charged with selling magazines under a city ordinance that permits it. When that was pointed out, he was charged with violating an ordinance against