when you have a dream to change the world for a better place to live, you can begin with your own country.. you can push for a constitutional amendment. if nobody has anything reasonable to say against your proposed amendment, the word will spread faster than you imagine, and you will succeed. when your country will make a great progress then others will follow.. and the world will change for better. and you better act now, because tomorrow may be too late.
read: about death penalty.