After rising up to rally against the arrest of Istanbul's powerful opposition mayor Ekrem Imamoglu, young Turkish protesters have been forced to wake up to the reality of police custody.
Lawyers and politicians supportive of Imamoglu, President Recep Tayyip Erdogan's top political challenger, have slammed the "police brutality" suffered by students arrested for taking part in the country's worst unrest for more than a decade.
