"My Brothers and Sisters in the North" (available on YouTube, woman from occupied Korea visits the DPRK)

"The Revolution Will Not Be Televised" (available on YouTube, goes over the 2002 coup in Venezuela)

"How America Stole the Land of Hawaii (available on YouTube, talks about the history of Hawaii and the independent political scene)

Documentaries on the Western-backed gangster slaughter of ~1 million communists and potential sympathizers in Indonesia:

"The Act of Killing" (interviews some perpetrators, goes over the awful political scene, mainly follows some men trying to make a garbage movie about the situation)

"The Look of Silence" (sequel, follows the brother of a murdered communist interviewing the perpetrators, really makes you feel angry and powerless)

You can find these on most TV/movie streaming sites.