Is the line having explicitly socialist characters or not?

Movies with left-ish themes:

• Parasite
• Us
• Get Out
• Mad Max: Fury Road
• Snowpiercer
• Network
• The Grapes of Wrath
• Paths of Glory
• It’s a Wonderful Life
• There Will Be Blood
• Do The Right Thing
• Fruitvale Station
• If Beale Street Could Talk
• The Thin Blue Line
• High Noon
• All That Heaven Allows / Ali: Fear Eats The Soul
• I, Daniel Blake
• Hell or High Water
• Two Days, One Night
• La Haine
• Bicycle Thieves
• Cache
• The Conformist
• Pretty much any Bunuel film: The Exterminating Angel, The Discrete Charm of the Bourgeoisie, Viridiana, Los Olvidados
• Modern Times
• The Great Dictator

Movies about socialists / communists/ civil wars but still maybe a little sneaky for people

• The Act of Killing / The Look of Silence
• The Battle of Algiers
• The Motorcycle Diaries
• Z
• Hunger
• Malcolm X

I find lots of movies can be interpreted through a leftist lens, really. Harakiri is a samurai film, but it’s also about the dangers of uncompromising traditionalism and authority, which I think could fall under a leftist theme.