These are eternal questions. In the beginning, we had nothing to share. People were taking shelter in caves, hunting and building their tiny future together. Then authoritarianism came along — a few got everything, their slaves — got nothing. Feudalism became a fabric of society, seducing rulers and moving people's desires towards a lust for power like moths drawn to the flame.
Epochs changed, cultures grew and disappeared altogether with their languages, traditions, and religions, but nothing changed in peoples values. All the same, people used every opportunity to rob and to divide. There were some attempts to try different approaches. In XX century communism created two giant countries, one of which, China, still exists.
But behind communist ideas was the same ugly smile of lust for power. The same principle: you see, you grab, they grab, you fight and you don't let go. Today we're told that those days are long gone. That freedom and tolerance walk the earth. Segregation was yesterday, and the last smoldering fires of sexism and racism are left to extinguish and then arrives the long awaited heaven on earth. Wait. What has really changed in the last millennia?
Did lobbies, who push legislations for the benefit of a small group, go away? Did corporations, who accumulate wealth in a few people's pockets, leaving others enjoying leftovers, disappear? Did those, who enslave you, but instead of a whip, they've traded it for a bank loan, go away?
Is it fair that children, born to poor families, have almost no chance for a quality education? Is it fair that a man, who got in an accident, loses all means to feed his children? Is it fair that engineers, who create amazing technologies, receive a miserable share from the profits these inventions, generate?