How then will you defend yourselves when others come with intent to loot, rape, maim and slaughter? If you know any history, you can't tell yourself it's a question of 'if'. It isn't; it's only a question of WHEN. Remember the 1930s when the nations all closed their doors to ever more desperate Jews. Had there been an Israel then, they and their posterity might be alive now.
I would like to think that other people of color will stand by you in such a time but neither would I count on it. Face the bitter fact: in the time of desperation you may again have no help but your own and the handful of 'righteous among the nations' and the help they'll be able to give will be, as before, sorely limited.