This is where I think policies do need to be somewhat race-specific, is making sure that institutions are not discriminatory. So you've got something like the FHA [Federal Housing Administration], which was on its face a universal program that involved a huge mechanism for wealth accumulation and people entering into the middle class.

One of the challenges over the last decade is America has done experiments in nation building in places like Iraq and Afghanistan and we've neglected, for example, developing our own economy, our own energy sectors, our own education system. And it's very hard for us to project leadership around the world when we're not doing what we need to do.

People always - I think were surprised about me connecting with folks in small town Iowa. And the reason I did was - first of all, I had the benefit that at the time nobody expected me to win. And so I wasn't viewed through this prism of Fox News and conservative media making me scary. At the time, I didn't think seem scary, other than just having a funny name. I seemed young.

There are a lot of very religious scientists around. I think the problem here is that in our school systems, and to some degree - and this is where it is relevant - with school boards around the country that are mandating curriculums and textbooks, you start seeing this weird watering down of scientific fact so that our kids are growing up in an environment - and this connects to what I was saying earlier abou the media - where everything's contested. Where nothing is true.

It was the labor movement that helped secure so much of what we take for granted today. The 40-hour work week, the minimum wage, family leave, health insurance, Social Security, Medicare, retirement plans. The cornerstones of the middle-class security all bear the union label.

A number of countries, including some who have loudly criticized the NSA, privately acknowledge that America has special responsibilities as the world's only superpower, that our intelligence capabilities are critical to meeting these responsibilities, and that they themselves have relied on the information we obtain to protect their own people.

We must begin by acknowledging a hard truth. We will not eradicate violent conflict in our lifetimes. There will be times when nations, acting individually or in concert, will find the use of force not only necessary but morally justified.