Shia residents of Damascus have described how armed Sunni militiamen daubed crosses on the doors of homes and assassinated religious leaders in the street.
The testimonies given by Shia refugees who have fled to Lebanon paint a graphic picture of how the Syrian rebellion has descended into deep-seated sectarianism, with hardline Sunni rebels bent on targeting minorities and building an uncompromising Islamic state.
"I heard the imam in the mosque next to our home call for jihad against the Syrian regime, and against the Alawites and Shia. They were shouting it from the minarets," said Awatif, 60, too frightened of reprisals to give her family name.
"The neighbourhood next to ours was burned. Friends found crosses marked in red on their doors and then they were attacked. That was when we knew we had to leave."
Awatif and her elderly husband Ali, 70, are among thousands of Shia families to have sought refuge across the border in Lebanon, in their case in the mountain village of Machaghara.