This month marks 100 years since the murder of socialist revolutionary Rosa Luxemburg. So, on this week's Stammtisch we're asking: why is Luxemburg so important today for left-wing politics? And how is the radical Left in Germany doing anyway? Stammtisch hosts Damien McGuinness and Michaela Küfner are joined by journalist Siobhán Dowling and The Guardian's Kate Connolly.