Slave morality — It was an evil thing Europeans did to American Indians, so they deserve to have something similar done to them.
Master morality — This was bad for the people who allowed it to happen to them. We will not allow it to happen to us.
Nietzsche’s duality is applicable not just in the case of an individual internet meme, but on mass migration from relatively dysfunctional, violent, chaotic places to relatively functional, non-violent, controlled places more generally. Jayman may hate to quote her, but the point is so blatantly obvious that he isn’t going to contest its validity:
Other than for the purposes of moral posturing and virtue signalling, there are no compelling reasons* to do it.
Humorously, as of late social justice warriors have been emphasizing the divine sanction of their mission. To many of these people, history started when they were in grade school. The religious and historical ignorance of the arguments they put forward are a consequence of this ignorance. An example of the former:
As told in Luke, the story is that Joseph and Mary were returning to Joseph’s ancestral home to register for a mandatory Roman census. It’s not a tale of fleeing persecution at all. To the contrary, it’s a story of being legally compelled to return home.
Which, you know, is what a lot of people want the refugees to do (and what one presidential candidate has pledged to make them do).
And of the latter:
The sermon on the mount putatively occurred 600 years before Islam came into existence. Yikes.
* From a nationalist or a citizenist perspective–if the objective is the demographic displacement of white America, the reasons for support are obvious.