The answer to defeating tribalism is NOT to promote tribalism.
Unity may be aspirational, it may not be where we stand today, but how is your slander of that goal a "reality-based" thinking? Was
I have a Dream putting on a show of ignoring it? Did MLK just perpetuate the divisions and exacerbate the need to mend the rifts?
There is a crisis in modern day thinking. As if one can balance the scales on a national level, while ignoring individuals and their circumstances. Blacks are poorer than Whites, on average. Does that mean Black football stars are still poor? Does that mean working class Whites are still rich? People are too caught up in nation wide statistics that they ignore the humanity and varied experiences of individual people. Policy discussions such as these are blinded and participants cannot
see the forest from the trees.
What you face is the wrath of a hungry people. Starved for two generations by trickle down delusions wrought by Republicans. Try telling them the economy is doing great, try telling them they are not abused or neglected. That they are not starving and looking for more. Wave some red juicy meat in front of a large hungry animal and see if you keep your arm attached. Then picture 2016 as doing just that.
I see here a continuation of the fallacy that you cannot pickup support by pledging to help people. All people.
How we correct it DOES matter a great deal. But first, are you not economically literate enough to understand the premise? Helping ALL people would help minorities. It would help the poorest people... the most. AKA, it is literally reparations in all but name. With the crucial difference being it actually attempts to unify people behind a common self interest. Rather than pitting one another against each other.
You being a "reality-based" segregationist in policy will only lead to division and hatred. It tells people you stand against them as an obstacle to their fulfillment. Something that must be opposed to keep food on the table and a roof over their heads. A source for all their stress. You become the scapegoat, a lightning rod for the ills of trickle down.
Yes, you may actively oppose trickle down, but it will matter not if you tell people that salvation is only for some, and especially not for them. Irresponsible is declaring war on a people and thinking that could stand. You are mistaken if you think segregationist policy can mend those wounds, and I would point to Dr. King as the path forward.
E Pluribus Unum.