President Recep Tayyip Erdogan has condemned growing protests in Turkey days after the arrest of a key opposition figure. In a speech on Friday, Erdogan said his government would not "surrender" to "vandalism" or "street terror" ahead of more protests. "We will not accept the disruption of public order." On Wednesday, police detained Istanbul's mayor, Ekrem Imamoglu, on charges of corruption and aiding terrorist groups, days before he was due to be selected as a presidential candidate.