It seems to me that for centuries the white nations have dominated and controlled the world very much more than the Arab or black nations. We don't like it, one little bit, that the dreaded foreigner has had enough and wants the rich, good life of plenty, too.
European and American slavery was far more extensive than Arab slavery. The white countries grew very rich from
- the slave trade,
- from collecting colonies and exploiting our power over others,
- from our wars around the world and the world wars that became thus because of the Europeans had their colonies fighting for them;
- from the white man's successful interference and spread of his culture, his civilisation and Christian faith;
- economic and trading domination - and military might - keep the traditional white nations in world control and running the show.