I surely remember being in the administration building sitting in long sleepless nights and working with young people to do the right thing. And that is to tell our university, at that time, the University of Chicago, that it was wrong to own and maintain segregated housing. I remember it very well.

I don't run against Hillary Clinton. I run on the most important issues facing America.

In fact, climate change is directly related to the growth of terrorism.

As a result of the Citizens United Supreme Court decision, American democracy is being undermined by the ability of the Koch brothers and other billionaire families. These wealthy contributors can literally buy politicians and elections by spending hundreds of millions of dollars in support of the candidates of their choice. We need to overturn Citizens United and move toward public funding of elections so that all candidates can run for office without being beholden to the wealthy and powerful.

This is what income inequality means in America, and why the gap between the very rich and everyone else is growing wider. According to a recent study, CEO pay is now 295 times more than the pay of a typical worker. In 1965, the differential was 20 times. We must create an economy that works for all, not just the top 1%.

Politics is not a baseball game with winners or losers. What politics is about is whether we protect the needs of millions of people in this country who are hurting.

The billionaire class fully understands what is at stake. That's why a handful of them are pouring hundreds of millions of dollars into the current elections. Their goal is not to strengthen the middle class, but continue the trend in which the rich are getting richer at the expense of everyone else.