Essentially, just push against individualism and keep reminding them that context (social, economic, etc) going back decades will determine much of life. It’s also helpful to try to remove binary good/bad morality from politics and explain the historical context of something, eg Russia/Ukraine, North Korea. That’s laying a foundation for more complex moves later.

Just remember that you’re not just explaining materialism, you are helping them unlearn brain worms. And that can take a long time with a lot of conversations