University students march in protest towards the Istanbul Municipality in Sarachane as they demonstrate against the arrest of Istanbul Mayor Ekrem Imamoglu 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 slams as a politically-motivated ''coup.'' (Photo by Erhan Demirtas/NurPhoto)

University students protest Istanbul Municipality Sarachane demonstration arrest Ekrem Imamoglu Istanbul Mayor March 21 2025 Turkish police detention powerful mayor March 19 investigations graft supporting terror opposition party politically-motivated coup Erhan Demirtas NurPhoto main opposition Istanbul Turkey political unrest student activism civic engagement opposition protest government crackdown political arrests freedom of expression political charges civil rights public demonstration.