I'd like to build the world a home
And furnish it with love
Grow apple trees and honey bees
And snow white turtle doves
I'd like to teach the world to sing
In perfect harmony
I'd like to hold it in my arms
And keep it company
I'd like to see the world for once
All standing hand in hand
And hear them echo through the hills
For peace throughout the land
Alternatively, bring a maximum income cap (any excess goes to community projects, R&D, investment in infrastructure), help stop people thinking money is the root to happiness and success, educate on tolerance and base pride on the good things we do for others and not what we have/own. Anyone who is not very nice goes to behavioural school. Peace and love.