What is the most controversial film you have ever watched?

In the Realm of the Senses (1976) is a controversial film directed by Nagisa Ōshima, based on the true story of Sada Abe, a woman whose obsessive relationship with her lover led to a shocking crime in 1930s Japan. The film explores themes of passion, power, and sexuality, pushing boundaries with its explicit content and challenging societal norms. Its raw depiction of human desire and taboo subjects has made it both acclaimed and polarizing.