Barack Obama: “At its worst, politics can be a dirty business.”

And I will fight for that, even if I don’t always think it’s going to win.

A drift towards extremism was "not inevitable

Because if this becomes the new normal, there’s no reason to believe it will stop with her — or that future presidents, in either party, won’t do the same.

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.