Allen, who was involved in his own sex scandal years ago, is among several filmmakers who have signed a petition demanding that Roman Polanski be freed from detention in Switzerland, where he was taken into custody on a 31-year-old U.S. warrant while on his way to a film festival in Zurich. "By their extraterritorial nature, film festivals the world over have always permitted works to be shown and for filmmakers to present them freely and safely, even when certain States opposed this," reads the petition. "The arrest of Roman Polanski in a neutral country, where he assumed he could travel without hindrance, undermines this tradition: it opens the way for actions of which no-one can know the effects." See some of the other high-profile international stars who have signed...