There's just a huge amount of evidence from a large number of solid sources, and I guess the reason people downvoted without replying is that unless you're really incapable of very basic googling you could be trolling.

If sincere, maybe start with this wikipedia page and follow its sources. https://en.wikipedia.org/wiki/Human_rights_in_North_Korea

I also like yo remain skeptical ubtil I see things with my own eyes. Our views are heavily controlled by the MSM, I've never been able to buy into what they are selling. It is way too convenient since we are the main war machine in the past half century. They never get local shit right so Im also supposed to believe Mordor exists? How far fetched of an idea we got everyone to believe. Who's got the ring?