Funny, only the 'city/TV' Aboriginals cry INVASION DAY.
Whereas I've known many a person with aboriginal background say things like:
"Thank god - we're finally free!"
"I've been travelling the world (walkabout)"
"Welcome"
"Finally, I have awaken."
Or as one Yellow person said "Shouldn't the Abos be backdated for 40,000 years of Rent for having 'their' land in a white region of the world?"
Truth be known - you need an equal portion of racial intergration for the best GENE POOL quality or you get defects like the Middle-Eastern and Asian nations are starting to show because their gene-pool COMBINATION has lowered to something like just 3 sets of numbers, rather than say 10 sets - that keep repeating upon itself.
Breeding amongst oneself does bring out a dominant gene 'racial' appearance - but it also weakens the quality of the gene ...not as smart or strong, etc.
As for Culture ...well, 40,000 years of 'isolationism' shows what lack of intergration (or invasion!

) can do to a society.