Oh, the "one of ours" comment is definitely a US/colonizer reference. The whole thing about Killmonger is that while he has a point, he is not right. His methods are colonizer's methods: sexism, misogyny, divide and conquer, destabilize, the murder of women and children, a complete & utter inability to look toward the future (WTAF, you're king and you burn the garden that's supposed to give powers to your heirs, thereby securing your dynasty???). Look at what happens when he sits on the throne? Five minutes later, there's a mini-civil war.