Riots broke out at the campus of Ankara's Middle East Technical University as students protested against the detention of Istanbul mayor Ekrem Imamoglu. Thousands have been protesting in major Turkish cities for a second night in a row as Imamoglu, President Erdogan's main political rival, called for judges to take a stand against the Turkish government's misuse of the courts. FRANCE 24's Jasper Mortimer reports from Ankara.