Another point that is relevant I think is that all humans want power.
The Irish absolutely it when they were treated like they were subhuman in England. And rightfully so.
howeber I now see lots of Irish people treating foreigners like dirt , in Ireland.
Which shows that humans are the same anywhere. They don't like other people coming into their territory. And people like a sense of superiority everywhere.
The English felt superiority over the Irish for a while.
Now that loads of immigrants are coming to Ireland,
I have definitely seen a lot of Irish people demonstrate superiority, and a lot of "we are way better than them" from Irish people.
No one country is really worse than the otherm the same pattern gets repeated everywhere