To celebrate 25 years of "Index on Censorship", international critics, academics and film-makers have contributed to this volume to explore why cinema has, throughout the whole of the 20th century, been perceived by authority to be such a dangerous and potentially corrupting medium. These essays seek to bring the many different ways in which film has been, and continues to be, from the obvious banning of films, to hidden methods of suppression such as self-censorship and refusals of funding. Contributors James Ivory, Roman Polanski, Milos Forman, Philip French and Arthur C. Clarke.