Get a load of some of the comments at that link. Basically it's "Ha Ha! Turnabout's fair play! You stole the land and now it's being taken back", and you know it's probably white liberals making the comments. Every time I hear some variation of this I ask the person when we can expect them to sign over the deed to their house to whatever the nearest Indian tribe is. Oh, you're not? You mean you just want to take snipes at American history, but that particular piece of stolen land you own, oh that particular parcel of land is all yours right?
People who want to launch into some moralizing, pious tirade against America and stolen land should GTFO. After all, if it's truly such a unique and unprecedented evil in world history, then by living in and enjoying the results these centuries later aren't they guilty of dealing in stolen goods? I mean hey, you don't get to keep the diamond necklace just because you weren't the one to hold up the jewelry store right?
It's like anything else with the Left -- the real name of the game is assaulting the moral and cultural confidence. There need not be any real substance, and it doesn't matter if it directly contradicts other things in the constellation of Left wing causes.