Which was worse? Holocaust, US Slavery, or Native American policies?

Yes.

It’s not worthwhile to compare atrocities and rank them. Study them, understand them, keep further ones from happening, sure. But “Oppression Olympics” aren’t useful.

If you take individual by individual, they all are the same. Just because there are higher numbers in any one of them doesn’t make it a bigger holocaust or worse tragedy, except for those who are just reading about it.
It’s like comparing one family being killed in a small plane crash vs. a jetliner going down with a plane full of passengers. For the individuals involved, the horror isn’t any greater just because there are more people involved.

Which is worse: A girl abused by her uncle, a boy by a priest or a woman by her husband?
They’re all terrible happenings in respectively the girl, the boy, and the woman’s life and, in my opinion they are not subject to comparison.
My grief over a deceased sibbling is my grief over that deceased sibbling and I can not say that my grief is ‘worth’ 100 and your grief over your deceased second cousin is ‘worth’ less because your cousin is further away from you (in blood line) than my brother is to me.
Pain is pain is pain.

You forget the atrocities done by the USSR :P

There is no possible way to pick a winner in these catagories.

All three were an embarrassment to the human race and should never have happened.

D) All of the above.

You also forgot genocide in the middle east that killed forty million. Also, China, Tibet, Africa, Brazil, Burundi, south east Asia, and all of the wars during the BC times that wiped out entire races and Gengis Khans army. Genocide has been around forever, placing medals of signification on one over another should not be done.

I agree with @Dutchess_III – whichever one affects you or your family personally would be considered the worse by you. I didn’t have any jewish, native american or african american relatives, but many of my people were beheaded by King Henry VIII, mostly for being decendants of the Plantagenets. The only reason I am even here is because Henry VIII died the night before the scheduled execution of my ancestor, Thomas Howard, 3rd Duke of Norfolk. What luck!

Many of my people were killed by indians, too. And we lost a bunch of them in the Civil War. My GGGG grandmother wrote in the family Bible that the Civil War was the worse atrocity that the world has ever known. But that was her perspective.

I just watched a documentary on the Dark Ages yesterday, talk about war, famine and plague lasting for like 400 years. lol

All human suffering and war, oppression, slavery, cannot be compared as better than or worse than.

Pain is pain and evil is evil regardless of how it manifests.

I don’t know where you got your estimates of 60 million for slavery. There were 12–13 million people transported from Africa to the US. and approximately 11.7 million Native Americans killed.

While the numbers are roughly analogous, the Holocaust was by far the worst because it was deliberate genocide. While many slaves died from the poor conditions aboard slave ships and poor treatment, killing them was counterproductive to having workers.

Also, most Indians died of disease for which they had no immunity rather than a deliberate wiping out.

Not to minimize those deaths or the abhorrent policies that led to them, I don’t think it compares to Hitler’s planned extermination of Jews, Gypsies, Poles, gays, political dissidents and the handicapped.

Atrocities are incommensurable. That’s why they are atrocities rather than misfortunes or mishaps.

What about the atrocities committed by asteroids and meteors to the dinosaurs?

They’re all terrible in different ways, there’s not really a direct comparison to be made. The Holocaust was a purposeful genocide of a group of people in horrible ways for several decades. Slavery was the total control and despicable treatment of a race for centuries that led to aftereffects for years after. The Native American policies led to the destruction of the majority of a culture. I wouldn’t say any of them is necessarily worse than the other, they’re equally heinous in different aspects.

I agree that all atrocities are, well, atrocious! However, I think those who say that the early settlers killed off the Native Americans are over-simplifying a very complex event. Firstly, the Native Americans were a dying race when the Europeans got here. They had waged war amongst themselves to a point of near extinction before the pilgrims came. They had low birth rates and high infant mortality rates (which is why they adopted the practice of kidnapping the white women and children and making them part of their tribe rather than just killing them.) Then with the arrival of European immigrants, bringing with them European diseases that the Native Americans had no immunity to (as @Marinelife said), that was the final blow.

The same thing happened to the native Hawaiians, whose numbers went from 800,000 to a mere 40,000 by 1900 due to smallpox, whooping cough, influenza and measles brought over by Captain Cook and his crew. Oops!

Back then, the people didn’t know about such things. The Europeans didn’t do it on purpose. Makes me wonder if it is such a good idea to be bringing back stuff like moon rocks to Earth. We might bring back some disease that wipes out the whole planet!

Well, you left out the part about 20,000 men, women and children who starve to death every single day due to poor management of Earth’s resources. Or what about the Sex slave business that goes on right beneath our noses. “The U.S. Central Intelligence Agency estimates that 50,000 people are trafficked into or transited through the U.S.A. annually as sex slaves, domestics, garment, and agricultural slaves.source

However, as man made disasters go, I would go with the Mongol invasions of Europe, although there is a case to be made for the Lushan Rebellion which reportedly wiped out 15% of the world population of the time.

Here is a List of wars and disasters by death toll