He himself, however, did not believe in left-wing ideology; in 1932 after the decline of the proletarian movement, he showed his opportunistic side by being invited by Shinko Kinema to direct the propaganda film called 'Manmo kenkoku no reimei' (Dawn in Manchuria).
しかし、溝口自身は左翼思想の持ち主でもなく、プロレタリア運動が退潮後の7年には新興キネマに招かれて国策映画「満蒙建国の黎明」を撮るなど、変わり身の早いところも見せている。