In recent years Turkey has been seen as a bulwark of stability and democracy in a neighbourhood disfigured by political turmoil and communal conflict. But now Turkey's wrestling with its own demons. Mass protests against the alleged authoritarianism of the Erdogan Government have prompted a harsh police response. Stephen Sackur talks to leading Turkish writer and political activist Elif Shafak - what is Turkey's spasm of unrest really about? Show less