Barack Obama: “The death of Trayvon Martin was a tragedy, not just for his family or for any one community, but for America.”

And I will fight for that, even if I don’t always think it’s going to win.

Use that hope to make a difference. Get involved.

I’m going to insist that we can do better than we’re doing right now.

I think when we act on that basis, it doesn't always work out, but over time things do get better.