La naranja prohibida

The name of this movie is La naranja prohibida released in 2021-10-23 and it's main theme is Spain, 1970s. A Clockwork Orange, a film considered by critics and audiences as one of the best works in the history of cinema, directed by Stanley Kubrick and released in 1971, was banned by the strict Franco government. However, the film was finally premiered, without going through censorship, during the 20th edition of the Seminci, the Valladolid Film Festival, on April 24, 1975. How was this possible?.