The Broken Commandment
Ushimatsu's father told him never to reveal his lower-caste heritage; years later, he now contemplates confiding in an activist fighting against such discrimination.
Starring Raizō Ichikawa, Rentaro Mikuni, Shiho Fujimura, Eiji Funakoshi, Jun Hamamura, Yoshi Katō, Kyōko Kishida, Seiji Miyaguchi, Hiroyuki Nagato, Haruko Sugimura
It's a drama movie, and has a rating of 6.9 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Mexico.