If your statement that you " want a world, or at the very least an America, free from Jews and blacks and Mexicans." is literally true; you may well have already set your fate to be one of disappointment.
Unless Jesus returns and is sporting the same supremacist attitude, your chance at happiness appears very slim indeed. Considering the odds of that happening at all, let alone first, I would be reconsidering my expectations, were I you.
The best thing anyone can do, is follow their heart and do what feels right. If this game doesn't resonate for you, maybe you should be playing a different one. The Good Lord meant for you to be prosperous and happy, if this isn't your means of attaining that end, try something else. There is no harm in that.
I suspect we accomplished more we were expected to. Given that you are no more psychic than we are, how could you possibly weigh the success of our mission when you don't know what it was anymore than we do?
I agree with your assessment that it would be more comfortable to have some tangible feedback, but such is faith, trust and heretofore unknown scope of the end game.
I hope you take this is the vein it was intended and not offensively. I would say I'm on the same side, but I don't really see that to be the case. I think your hoped for goal is what I would view as being a little bit nefarious compared to mine. That does not matter though.
If you must leave, thanks for help, your help is welcomed anytime up the road. If you decide to stay for a bit, we will share the desire to see some tangible results before we are tempted to jump ship with you.