This is what happens with immigration!

People of an alien culture will have only regard for their kind. For the people of alien culture, they have no regard for the people of their host country, this is how they treat them:

http://www.aljazeera.com/news/2016/12/uk-arrests-slavery-raids-al-jazeera-film-161207192229652.html

It is for this, that the native people, if they are alert and wise are very guarded about immigrants.
When the immigrants first came to Canada and to the US, the natives were not alert to how they might be treated. The result is that, even today, the evidence is that the wealth of their land is utterly and absolutely denied to them. They have to beg for handouts.
It is even worse in Australia. The native peoples are not even recognized to exist in the Australian constitution.