Supporters of Istanbul Metropolitan Mayor Ekrem Imamoglu participate in a demonstration outside Istanbul municipality against his detention over a corruption probe in Istanbul, Turkey, on March 21, 2025. Turkish police detain Istanbul's powerful Mayor Ekrem Imamoglu on March 19 in connection with two investigations into graft and ''supporting terror,'' a move that the main opposition party criticizes as a politically-motivated ''coup.'' (Photo by Erhan Demirtas/NurPhoto)

Istanbul Ekrem Imamoglu demonstration Istanbul municipality detention corruption probe March 21 2025 Turkish police Mayor March 19 investigations graft supporting terror main opposition party politically-motivated coup Erhan Demirtas NurPhoto supporters metropolitan probe opposition politics arrest investigation protest Turkey scandal legal charges political unrest civic engagement government.