Another four films worth checking out.
Sister Stella L. (1984, dir. Mike De Leon)
White Sun of the Desert (1970, dir. Vladimir Motyl)
17th Parallel: Vietnam in War (1968, dir. Joris Ivens & Marceline Loridan Ivens)
A Colt Is My Passport (1967, dir. Takashi Nomura)
Through the Shattered Lens 