They want an apology for their self destruction? Seriously, I as an American, do not owe an apology to the Indians, or the descendants of slaves, railroad workers, or indentured servants. I never killed an Indian, or stole land, or took a slave, or coerced and exploited anyone for free labor or money. Perhaps my forefathers did but I am not responsible for their sins.
We presume you've purchased good title insurance however. Although you are not responsible for anything at all, you may still be held accountable for it!