[carlosjobim]

> Genocide is explicitly defined as "the deliberate killing of a large number of people from a particular nation or ethnic group with the aim of destroying that nation or group." The immigrants are not arriving onshore and butchering the natives.

No, but when immigrant/coloniser diaspora becomes large enough in numbers they rise up against the natives and start displacing them, most often violently. As seen almost always throughout history, or in the news tonight.

> It's just Nature.

Nature is nature, and human policy is separate from that. Displacing enormous amounts of people to "fix" some imaginary GDP number is as far from nature as can be, unless we argue that war and genocide is a natural behaviour among human beings. Which unfortunately I think we can. Then again if it's "just nature", then why do people here argue for organising mass migration to Japan. Let nature have it's course then?

As for the rest of your comment, you are arguing automatically based on what you have imagined that I wrote, even though I tried to clarify to you. I don't know how I can get my point through, so you can understand that I connected organised foreign colonisation / mass migration to Japan with genocide. Because one usually follows the other.

Even an outright military invasion can be less of a threat to a nation, since some conquerors only want to extract resources and tributes without taking over the land by putting their own population there.