What exactly is progressive politics? BBC's HARDtalk speaks to political philosopher, Roberto Mangabeira Unger, President Obama's former Harvard law professor who also served as Minister of Strategic Affairs in Brazil under President Lula. Unger who describes himself as a radical democrat, has an ambitious take on what it means to be progressive. He argues, "On the whole, throughout the world today, the progressives have no project. Their project is the project of their conservative...