[tonil]

The root cause it seems to be the state of the overall society of the planet earth.
Pain and suffer of one part of humanity while at the same time
pleasure and joy of another part .
This could eventually through several steps of developement throughout the years lead to constant wars, terrorism, killings and bad things in general, which our short known history confirms btw.
Add up to this seems to be the fact of reasonable doubt about the actual will of a world leaders , either politicians , bussinesmans ,religion members ,to solve those problems although it seems it could be done if such strategy would be defined on the the planetary level.
Maybe it's utopia but think about it.
Lack of perspective and guidance in life if needed, is I guess very good reason to trigger someone's emotions in one way or another.
If you are happy with you and the world around you ,I don't see a reason why would you do anything else then not doing to other people the things you would not like that they do to you.