<p>Cuban performance artist Tania Bruguera on 'artivism' in a changing world</p>

It's the Demography, Stupid!

Are we at a series of global tipping points? Radio 4 explores the paradigm shifts that are taking place across the globe, from the arrival of the post-truth society to the potential departure of globalisation, taking in shifting demographic sands, the backlash against the political elite and pivot of power to the East along the way.