Despite risking his own money, Kurosawa chose a story that was more directly critical of the Japanese business and political elites than any previous work. "The Bad Sleep Well", based on a script by Kurosawa's nephew Mike Inoue, is a revenge drama about a young man who is able to infiltrate the hierarchy of a corrupt Japanese company with the intention of exposing the men responsible for his father's death. Its theme proved topical: while the film was in production, the massive Anpo protests were held against the new U.S.–Japan Security treaty, which was seen by many Japanese, particularly the young, as threatening the country's democracy by giving too much power to corporations and politicians. The film opened in September 1960 to positive critical reaction and modest box office success. The 25-minute opening sequence depicting a corporate wedding reception is widely regarded as one of Kurosawa's most skillfully executed set pieces, but the remainder of the film is often perceived as disappointing by comparison. The movie has also been criticized for employing the conventional Kurosawan hero to combat a social evil that cannot be resolved through the actions of individuals, however courageous or cunning.