Barack Obama: “Our best defenses against this threat are well-informed and equipped families, local communities, and institutions.”

A drift towards extremism was "not inevitable

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”.

It is a decision about how do we face and embrace this finite amount of time we have on the planet.

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