That was my focus point: Why just a study on whites causing destruction on a scale that creates climate change, when the focus should have been IN GENERAL, loss of life on a mass scale period. I wouldnt believe one second that climate changes because of ONE group of people.
While the nations you mentioned were involved in what I would call mass murder, Europeans (Romans and Greeks before) imperialism the entire world, and the philosophy was that they were
owed the world they imperialism. That psychology also
justified their killing of
native populations in their conquest - rationalizing that they were
stronger and more
equipped to take over the population, winning fair and square.
It is the psychology of genocide through imperialism, and the historic campaign to marginalize its affects
worldwide that compel academics to study "white-only destruction".
Mass murder happens in every country - the leaders sicken and kill their own all of the time. When you kill others outside of your "own" that
are also human, that is genocide. Mao and others didn't see their own people as
humans, even though they clearly were. It always helps to see the object of murder as something less than human (e.g. the "savage" Natives, and the "genetically degenerate Africans".)
The Natives of the American continent, Africans, Indians, and other imperialism nations were killed off
specifically because they were natives that blocked mechanisms for attaining the resources the imperialists wanted. Again, the fact that it has been historically marginalized is a consequence of the worldwide influence the campaign held itself.