The thing is, do you want world peace to happen? Enjoy your FPS computer games. BANNED for Violant images and content, the same with most Action and Horror animes, films, books, TV rogrammes ect and most of the other stuff people find entertaining.
Humans seem to derive some sort of pleasure from aggression and any form of unpleasantness upon others. World Peace is just a nicer way of saying Political Correctness to the extreme.
World Peace is unlikley, as it's immpossible to please everyone all of the time. There will always be disagreements which isn't peaceful now is it. The only true way to get World Peace is to eliminate the entire human race as people can't disagree with things when they're dead can they!