Hatred can only be dissolved from within, by non-violent interaction between adversaries, leading to mutual understanding and empathy; exchanging fear for trust. It is the sole path to sustainable peace and solving a conflict forever. Your take has similarities with mine. See: www.canaan.community & www.convergence.ngo & www.pax.ngo

My Canaan approach is more a practical return to separate cultural communities in the same territory that co-exist by non-violent interaction breaking down walls between them. However on a humanity level I also have a more fundamental concept that is closer to what you propose here, namely to create a parallel culture of people whose target is to create an alternative society. see: https://medium.com/@refival/the-parable-of-religious-convergence-3-the-path-of-non-violent-resistance-e2037892d6e2