Barack Obama: “That is the spirit I want to reclaim in this country.”

It is a basic principle of American democracy that the government can’t selectively target individuals simply because of their political beliefs or what they say.

A drift towards extremism was "not inevitable

If I had a blame pie for why politics is so polarised and why we're seeing a rise of populism in many places, it's because of that information that is going into our brains every day.

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