The alert reader may anticipate my assertion that science and spirituality exist as two endpoints on a spectrum. The endpoints are defined by scales of complexity and fragility.
Science is not a workable basis for negotiating social issues.
Social conflict is an unavoidable consequence of our competitive interdependence. In a physical sense, it is predicated by the evaluation functions that distinguish entities that effectively manage energy from those that do not.
Achieving an evolved capacity to manage energy, however, is a process: the universe did not leap from disorder into maturity. The only way to distinguish between mature and immature forms of matter is some sort of competitive destruction. Ideally, at some point in our future, a natural death will be the endpoint of life. At earlier eras in the development of consciousness, however, when Darwinian experimentation was dominant, more immediate driving functions, such as predation and brute competition for reproductive opportunity, were necessary to hurry the process along.
In any competitive process, the dominant party is the party with the stronger will. The will to live is manifested most directly as muscles, bones and sinew. The will to create is manifested in the power of the mind.