Here is the message of Black Panther for those who do not understand:
It’s come to my attention browsing int internet that a lot of people don’t understand the underlying message of this movie. I’m reposting my explanation for those that need it.
The film highlights the schism between Africans and African-Americans and blacks from all over the diaspora. The relationship between the two has always been complicated. Because of slavery, African-Americans were stripped of their heritage and have no solid connection with Africa. Sometimes we (African-Americans) are considered “outsiders” by Africans even though we are technically the same people. Killmonger’s character represents blacks in America; he’s cheated out of his rightful heritage and abandoned in America. He is angry, and his anger represents most of what black Americans feel. Throughout the film he is called an outsider, not welcome. In the scene with his father in the ancestral plane, his father says the people in Wakanda will say he is “lost”.
This is why many African-Americans will identify with Killmonger’s character more so than T’challa. Chadwick Boseman himself said he identifies more with Killmonger and that T’challa is the true villain:
https://www.google.com/amp/s/www.theverge.com/platform/amp/2018/2/28/17063218/chadwick-boseman-tchalla-enemy-black-panther
Throughout the film, everything Killmonger says is right but his methods are wrong. T’challa realizes this by the end of the movie by going back to Oakland and supporting other African-Americans in need because no matter how separated that are...they are his people too.
There’s more levels to this film but I think I’ve gotten to the core. There’s many articles explaining the message online but I’ll post a good article the explains it pretty well:
https://shadowandact.com/erik-killmonger-forgotten-wakanda
For those not wanting to read:
https://www.facebook.com/ScreenJunkies/videos/10156090108587403/
I hope that helps.