Sure, but comparing the virtual slave state of North Korea with the prosperity of South Korea is a pretty good argument for freedom and against slavery.

Do you have some examples of societies that radically increased their overall health and safety without adopting liberal economic policies? Cuba, maybe?

This is a very reasonable question, but I think this is too off topic from this article to comply with HN's guidelines as it verges on more general questions. The latest issue of Jacobin does compare the Cuban health system to the US health system and to the Dominican Republic if you're interested, but it's print/subscriber only. SK and NK are too complex to be analyzed under these textual constraints.