For most of human history, the average person rarely knew, let alone cared, about what happened beyond his or her little community of mostly interrelated people. Now, something can happen halfway across the world, to strangers of a completely foreign culture and society, and we feel emotionally and politically invested. We mourn, express solidarity, debate, and otherwise get involved in matters that by all accounts should not concern us.
It is easy to take for granted that we live in a global community, in which our social, economic, and even personal lives are impacted by the fate of total strangers thousands of miles away. But this is actually a radically new development in our species’s history, after millennia of living in small tribes, bands, and city-states. (Indeed, civilizations only emerged three to four thousand years ago, whereas modern humans have existed for at least a quarter of a million years.)
Doubtless, we are far from forming a truly cohesive and universal identity — too many things still separates us and undermine our ability to empathize, including our biology (e.g., our minds evolved to prioritize genetic kin — those who look and seem more similar — and can develop only a limited number of deep social connections).
But given the novelty of this globalized world, I am confident that with time, such limitations can be transcended. Just as the city or country — now totally common and accepted social units — was once an alien concept for thousands of years, so too can something as crazy as a global community, in the psychological if not political sense, be a reality.