I used to play a fun game with white folks to wake them up a bit. Any time a white person would say something about slavery ending or segregation ending or something, I'd ask them, "When did slavery end, exactly?"
They'd say something about the civil war, and I'd cite Slavery By Another Name and point out peonage in the early 1900's, which wasn't even prosecuted until the 1940's. They guess after that and I'd point out that, legally speaking, there was no law *against slavery* in the US until the 50's. I might point out that Jim Crow was really about extending slavery.
Whatever white person then guesses the civil rights movement ended slavery, and then I'd explain the 13th amendment to them and blow their minds. I might even point out how Walmart was sued for using slave labor when they locked workers in stores after hours and forced them to work without pay.
I feel like the 13th Amendment is common enough knowledge now that basically anyone would answer correctly that slavery is still legal in the US.
So how about we play another game. When was the last time the US violated a treaty with a tribe, failed to uphold a promise in a treaty, or otherwise illegally annex sovereign indigenous land? I don't mean this in the sense that they're always in violation. I mean, what was the last year that the US government violated a treaty that they *had been honoring*.
If you try to Google broken treaties, most results will cover the history up to 1871. Most folks will probably guess the trail of tears or something like that. Some clever folks might point to the annexation of Hawaii in 1898. But I don't think that a lot of people know about the US military via Pierce County violated the Treaty of Medicine Creek by illegally annexing part of the Nisqually reservation in 1918 to expand the local military base called JBLM.
Now... With that starting point, let's play. Putting the question another way...