The Peace Pledge Union is a group of people who think that fighting and war are bad things. They believe that it's better to try and solve problems without fighting. They make a promise to never be violent and instead to try and solve problems peacefully. They want everyone in the world to follow their example and be peaceful too. This way, no one will get hurt and everyone can be happy. They also help people who have been hurt by war and try to spread the word about being peaceful.