I think at a certain age I became conscious of the power of words. And it was fairly late. I was kind of a goofball - but I was always subconsciously thinking about issues.

We cannot stop every act of senseless violence. We cannot know every evil that lurks in troubled minds. But if we can prevent even one tragedy like this, save even one life, spare other families what these families are going through, surely we've got an obligation to try.

The truth of the matter is that the problem of police shootings and reactions in the community.

I've said this before, and I know this raises questions in the minds of some evangelicals. I do not believe that my mother, who never formally embraced Christianity as far as I know ... I do not believe she went to hell.

As tough as things have been, I am convinced you are tougher. I've seen your passion and I've seen your service. I've seen you engage and I've seen you turn out in record numbers. I've heard your voices amplified by creativity and a digital fluency that those of us in older generations can barely comprehend. I've seen a generation eager, impatient even, to step into the rushing waters of history and change its course.

We may have different backgrounds, but we believe in the same dream that says this is a country where anything's possible. No matter who you are. No matter where you come from.

I want my children - I want Malia and Sasha - to understand that they've got responsibilities beyond just what they themselves have done. That they have a responsibility to the larger community and the larger nation, that they should be sensitive to and extra thoughtful about the plight of people who have been oppressed in the past, are oppressed currently.