Riot police take their positions during demonstrations on the third anniversary of the Mohamed Mahmoud violent clashes in central Cairo

Riot police take their positions as protesters and activists called for demonstrations on the third anniversary of the Mohamed Mahmoud violent clashes in central Cairo November 19, 2014. Egyptian police arrested 25 individuals after four hundred protestors staged a march through downtown Cairo on the anniversary of deadly clashes with security forces three years ago, the interior ministry said on Wednesday. REUTERS/Asmaa Waguih (EGYPT – Tags: POLITICS ANNIVERSARY CIVIL UNREST)