Watch this video for some truly wonderful insight about listening and understanding different point of views. As humans, our opinions are shaped by experiences and surroundings. We come in, usually very strongly with our own way of thinking. Sometimes forgetting that others have their own, usually different beliefs.
Viewpoints can fall into the trap of oversimplification. The only real way to get them to see your views is to listen to theirs. When you do, you will find that their values are often very similar to yours.