About the racial equality:
It takes half a brain to realize people are different. Not much more to understand different races have characteristic features other than the looks. "The Cathedrals" "lying" and "bad-policies" are imho misinterpretations of the actual noble cause to provide an environment where all the different people may flourish and feel equally respected, which is the right thing to do.
The comments below are about sexism (masquerading as the realities of differences between sexes), but can be similarly applied to racism (masquerading as the realities of differences between races).
If I am correct at representing the thinking of the D.E., we can't "provide an environment..." because there is a natural order to such matters.
There is no natural order. To assume such order you'd have to incorrectly assume that
1. Individuals within each group do not differ from each other.
2. Environment for every group is the same.
If the above two points were true, evolution would have already come up with the superior race and wiped out all the others.
In fact, evolution would preserve wide diversity (within the group) even if the environment was set, so as to allow survival of the species in a future change of the environment. When we observe evolution, "Survival of the fittest" is not exactly accurate. "Elimination of worst losers" fits much better.
Where D.E. stands on this is still not exacly clear to me, and it doesn't seem to be very clear to you either. If your premise was to acknownledge and appreciate the differences between peoples I'd agree, but right now it looks to me like you're more set on assuming and finding a "natural order" to put people in. Not only do I disagree on the existence of any definitive order, but I also think it's a very dangerous premise to build an ideology on. It will be used as an excuse for discrimination or something much worse.