Around the year 72000 BC an enormous volcano eruption in Sumatra (Indonesia) having the force of 1.5 million atomic bombs, causing a nuclear winter for the world, that lasted several years.  Our human ancestors population was killed off through loss of food sources, so that no more than three to ten thousand survivors were left.  Today all 7 billion of us are descended from this small group of survivors.  This makes us one of the most genetically close species in nature… from David Baker and “Crash Course Big History”  … The thought for our consideration is that for all the divisiveness in our world we are much more like all those people we think are different from us than not.