You are being a bit absurd here. Chomsky puts the estimated population of old America as between 12 and 15 million. Of those that remained once the entire land mass had been stolen were 250,000 and that is not a small decline. He readily calls it genocide as do many. Disease and hunger were factors, but likewise, those were factors in the holocaust. The other obvious factors were outright murder, massacres and concentration camps. The severity of which easily brings forth comparisons to Hitler's Germany. The history of America is a sordid and brutal one. It doesn't matter if I have been to a reservation or not. Historically they were forced on the population and conditions were deplorable. Many died from hunger and illness in such conditions and this is what happened in concentration camps in Germany. The model was taken from the North America approach to the indigenous problem. You might live in America, but that is not really an argument. You have never lived the life of a 19th century Indian.

The crux of genocide is 'systemic intent' is you suggest, but the Nazi's wanted people to use as labour. The death by processes such as disease or hunger was not necessarily intentional and thus explains the vast bulk of lives lost in the holocaust. The same thing happened to Native Indians in North American concentration camps. Settlers waged a war that took place over a handful of centuries and on the way wiped out most of the population. It is pretty unprecendented behaviour.

We are going round in circles on this one now. My take that the treatment is comparable to Nazi Germany is something you dispute, but what is far less contentious is the fact that genocide was commited. Killing all Indians was the aim of numerous politicians and militiamen and they almost succeeded in wiping them out once the land grab had been completed.