Jews have extremely small numbers and fall under one religion. Muslims are linked by religion too. It's a sacred doctrine which keeps them all bind.I couldn't because that's not how it works. It's human nature to group together, for example white privilege and white supremacy are real things but they aren't outright shown off at least not how they were at one point. It's a matter of which group of humans work best with each other to sustain their group, it's much more subtle than a unified racial banner. Moreover, the age of globalization may make it much easier to be united such a context anyway. Of course it starts at home everyone needs to get it together, but I don't understand why Blacks couldn't aspire to have a solidarity similar to the Jews.
Africans do have a bond like the jews, in africa. White supremacy works where they are the majority, for example we are the majority here, and thus we have privilege over foreigners here. White people are smart in the fact that they stay where they are the majority! While others flee to places to become a minority and fall under their umbrella. This is why I said we can not help them from over here, they can only be assisted when they fall under our umbrella.