Barack Obama: “Because protecting our children isn't 'unreasonable' - it's our most important obligation as parents and as Americans.”

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

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

People need to “rediscover what’s the story we tell about how we’re going to live together, and see each other, and recognise each other, and disagree, and yet, still care for each other”.

A drift towards extremism was "not inevitable