i.e. that there is likely to be overlap between desirable mental/moral traits and racial traits, that is what I think will always represent a unique problem in multiracial societies. It won't go unnoticed if the people you deem as having desirable mental and moral traits just so happen to be mostly white people, while a disproportionate number of undesirables just so happen to be black.
And it won't go noticed if its the Jews, or people with red hair, or members of the Masons, or if its only people with a star upon thar. It will happen in any society - multi-cultural, multi race, or in a mono culture with only purple people. If there is a correlation between behavior and some superficial outward characteristics it will be noticed and exploited. Look at how the Irish were treated at the turn of the last century - and they were White in a predominantly white society. Humans are at heart behaviorists - and its the correlation between that and some other nice and visible trait that leads to the economization of knowledge via stereotypes - collections of those indicators Libertas mentions. . Race comes up a lot because its the most visible and is most often correlated to a given culture - the norms of which dictate a particular set of behaviors and values , which in turn lead to a differing set of results. There is a hell of an (ethnic) difference in a Black form the American South and one from Jamaica , or Morocco. So yeah, Glock, its probably easier to find and exploit those fault lines in a multi ethnic/multi racial nation. But I would argue its only marginally harder in a mono-culture. The Left has successfully exploited the inherent natural differences between men and women - and probably to greater overall effect and damage ( because EVERYONE must interact with the opposite sex and not everyone comes into contact with different races every day) and you are going to have sexually based differences in every society unless you Brave New World it with sexless babies grown in test tubes from Male and Female donors kept in out of sight cages somewhere. Is it that much harder to exploit sex differences vs skin color differences?
I really don't think you are gaining much protection from these sh*t-stirrers by having a single race society or tribe, and you are loosing the ideas, inventions and brainstorming that come about when people with vastly different world views and experiences interact- and in a survival situation having multiple ideas, approaches and options to a problem can become an advantage..
And would the grievances be limited just to those who have been deemed undesirable? What about the blacks who have been accepted as having quality mental and moral traits, will they be fine with accepting that they're a lucky outlier? Or will they feel aggrieved on behalf of their fellow blacks who were rejected, and work to manipulate the "tribe" so that membership is broadened for their sake?
In my experience, they know perfectly well they are an outlier. They know perfectly well, because like us, they can think for themselves and made a conscious choice to not follow the herd. When I was at Columbia University in the early 90s, I knew a number of other black students (no I never met or saw Barry Sotero), and they had no problem telling you what was wrong with other blacks. I had one such friend (correctly) berate me for giving another black guy a pass on being an asshole because I didn't want to seem racist. "No!" he said, and with evident anger, " You apply the same standard to everyone. If he is an asshole , you call him an asshole and give him the gift of the same honest feedback you would give to a white that they are an asshole. As it is that Nigger is never going to hear it and he is never going to change. You are hurting him. You are being Racist." This as held true whenever I have met a Black person in my profession- they are eager to tell you why the god damn grievance mongers are wrong and how much they hate other blacks screwing it up for them by creating, perpetuating and validating a stereotype of bad behavior. Like us they know they aren't like the "other humans" - before the rampant affrimative action without merit movement really got started, the only Blacks who has "made it" were blacks who had actively rejected American-Black ethnicity ( If you read "White Liberals, Black Rednecks" , Sowell gives a compelling picture of where that ethnicity originates) and adopted our culture of success and they looked down on those in their own race who had tried to pull them back down when they tried to get out.
"Now, what percentage of certain ethnic groups exhibit the signs and traits we are talking about...who cares? I'm not interested in numbers, just probabilities so that I can protect me and mine. Others can fuss over ethnicity...I'll fuss over survival. "
Pretty much were I am at. And I am not turning away anyone with a like mind and a strong back who can aid my survival, because I don't have an escape pod with a hibernation chamber. I do have a cat, however.