What does it mean to be truly free? And can any of us be free until all of us are?

Nobel Peace Prize nominee Nathan Law has experienced first-hand the shocking speed with which our freedom can be taken away from us, as an elected politician arrested simply for speaking his mind.

He remembers what it is like to lack freedom - and his father's precarious three-day escape from China in a small rowing boat.

When authoritarianism makes gains around the world, demanding our silence as the price of doing business, it poses a challenge to democracy everywhere.

In this passionate rallying cry, Law argues that we must defend our freedom now or face losing it for ever.

'Now we all need to stand firm to defend our freedoms, to ensure truth is not determined by dictators. We are born free and as equals. As long as we believe in that, no one can take it away from us.'