Race based discrimination that favors any given minority will only come after the political/social upheaval that disadvantaged them has ceased to exist, more or less. At least, you have to reached the peak of your civil rights movement for that particular group, so that it's "obvious" that it's not just a "political opinion" to discriminate against them. This is why you presently see homeless GLBT kids who don't qualify for federal financial aid, while wealthy hispanic/black kids at private high schools get easy admits and full rides to wherever they apply.

It'll happen for middle easterners only once people no longer mind them--of course, then people will think it unfair that they are so oppressed, and whatever the current group-to-be-hated of that decade is will be further discriminated against in favor of correcting for a social pressure that has long since disappeared.