Is it permissible to open a channel specializing in reviewing American movies that include inappropriate scenes or music, knowing that there are movies that do not contain such scenes, and will I bear sin for everyone who watches these movies or listens to the music in them?

It is not permissible to open a channel for action and thriller films, and the like, because they often contain forbidden elements such as music, the immodest display of women (تبرج النساء), and unlawful mixing (الاختلاط المحرم). These are forbidden films, and there is no necessity to watch them.