Can or can’t

I like the lyrics of this song. It conveys that we are the same. Even though our colors of skin are different or have different ideas, nations and so on, it’s no doubt that we live on the earth. One day do we calm down to handle everything between us instead of having argument and speaking words to hurt people? When I turn on TV, I don’t want to watch the news of political figures fighting all the time or guys killing guys. I wish these events will disappear on day. Above all, we get along with each other well, and we should be together to make the world wonderful. I do hope it will become true in the future.