I'm an American, so while I found your points history about the Ottomans to be very interesting, they aren't part of America, the American system, and we can't change that history in another country. I'll leave up to the Turks or whoever in that region to set their history books straight.

The key difference is that in America we are trying to right our wrong, our shared history, and that exclusively means four hundred years of black slavery and the almost-slavery of sharecropping. This black slavery in America is more heinous and an affront then those place in the past, or any time before 1776, not because I'm an arrogant American, but because of the specific American promise of inalienable rights that our nation was founded on, which is the first real "experiment" in democracy. Because that date, all the "old world" countries or civilizations, including the Ottomans, were authoritarian single rule (despots, czars, kings or queens, rules or emperors etc.--one-party one-person rule). Democracy changed that system, and made it wrong to treat anyone differently, as every citizen must be entitled to the same equal rights so that they could vote their conscious of who should represent them. If this theory which was promised to all Americans is not practiced, America is not practiced. OF course, it was not fully practiced, and in some states not at all. Others like Massachusetts tried to abolish slavery by a judge in 1781–83. Not all states are the then or now, when judging them by the yardstick of what a full democracy should be.

And of course, I don't live with Ottomans, I live with black Americans. I strive to be empathic to the horror they have faced and the supremacist system still in place that still seeks to repress their voice, their vote, their talents. We are very much still living with the consequences of that system. Just ask them.