Anyone know what this song is called? A guy sings it, but I don't know who it is.

Here are some of the words: "What's the answer today in a world full of hate? I say, I say it's love. When you've lost what you've got. When it's dark, where's the light? I say, I say it's love. Where's the hope? Where's the peace? The reason to believe. I say, I say it's love."