In Cairo, the march set out from the Al-Iman mosque, where dozens of corpses of protesters clad in white shrouds were lined up before grieving relatives.
Hundreds of Morsi supporters attacked the local government offices in Giza and set them ablaze. Television footage showed the headquarters in flames as men tried to douse the fire with hoses. Assailants used Molotov bombs to burn down the building, Al Arabiya reported.
