if you want to bring about peace on earth i think the simplest solution would be to have a festival of gift giving and eating every month or two.
sure it would be hell in shops on the eve of giving day.
sure it would crucify the credit cards.
but it would save the economy as we spend, spend, spend.
but it would eradicate hate as people would be too busy worrying about buying and what to buy, and in that worry and orgy of buying people would come together in the shared communial activity of spending.
a new faith shared by all.
a new god worshipped by all.
give credit to trent reznor he was on the money (ahem to that pun, with his first, and best, cd) when he sang "god money i'll do anything for you./ god money just tell me what you want me to do."
he was a profit (just to keep the theme going).
personal spending and communal worrying over buying is the way to world peace.
besides people will be so broke they are going to be too busy worrying about how to earn more money to be bothered about hating someone because of their race, creed, gender, colour or sexuality.
(now where do i go to get that nobel peace prize?)