The former vice president calls on Americans to do what President Trump has not. He writes: 'We have fought this battle before—but today we have a special challenge. 'The giant forward steps we have taken in recent years on civil liberties and civil rights and human rights are being met by a ferocious pushback from the oldest and darkest forces in America. Are we really surprised they rose up? One man has brought the forces of darkness out of the shadows. We have an American president who has emboldened white supremacists with messages of comfort and support. What can we do? We have to do what our president has not. We have to uphold America’s values. We have to do what he will not. We have to defend our Constitution. We have to remember our kids are watching. We have to show the world America is still a beacon of light. Joined together, we will win this battle for our soul.'