Is it that man is basically evil? Is it just human behavior? Lots of questions. When we look around, it may seem like man is basically evil, but that is not true. There is good and evil within us all; it needs to be there for our basic survival, and they are subjective terms in the sense that we can define good and evil in whatever way we want. What's good for one person, may be considered evil by another and vice versa. However, the society will eventually reflect the minds of their leaders, and if the leaders are implementing what the majority perceives as evil, the society will be evil as well, and people affected by a malevolent government will start acting like them. However, WE are the ones who appoint and accept our leaders, so ultimately the responsibility is yours and mine.
All this chaos, genocide, ethnic cleansing and the overall disasters have a genuine purpose. It is all very carefully planned by a few people, mostly men, behind the scenes, high up in the society, above any power structure that the ordinary citizen is aware of. It is a modern extension of an old theme to "take over the world". To those people, power, control and wealth is their true religion and they use any means they can to maintain their power and control, including murder and genocide.