Whether we like it or not, we have all been born into this world as part of one great human family. Rich or poor, educated or uneducated, belonging to one nation or another, to one religion or another, adhering to this ideology or that, ultimately each of is just a human being like everyone else. We all desire happiness and do not want suffering.
True happiness comes from having a sense of inner peace and contentment, which in turn must be achieved by cultivating altruism, love and compassion, and by eliminating anger, selfishness and greed.
In some cases, lack of full knowledge or holistic view, that is also part of the problem. But mainly lack of moral principle. So long you have this genuine sort of concern, well being of other. That's the foundation of moral principle.