When "Taxi Driver" premiered at the Cannes Film Festival in 1976, it polarized audiences and critics alike. The film's graphic content, coupled with its exploration of themes such as loneliness, mental illness, and vigilantism, sparked heated debates about its artistic merit and social responsibility. However, Scorsese's bold vision and his collaboration with screenwriter Paul Schrader ultimately paid off, as "Taxi Driver" went on to receive widespread critical acclaim and earn four Academy Award nominations.