Egyptian activists released a brutally frank video on Friday, using images recorded during the mass sexual assault of a woman last week in Cairo’s Tahrir Square to urge volunteers to join their campaign against attacks during demonstrations.

The video, created by the filmmakers Aida Elkashef and Salam Yousry, uses disturbing overhead images of a crowd of men swarming around a woman being assaulted just out of view to explain the work of Op Anti-SH, one of two new initiatives to combat the sexual harassment and rape of female protesters.

While the video includes no graphic images and shows that volunteers did eventually manage to help the woman to a safe location — near the KFC in the square — the detailed description of the woman’s assault stunned some viewers.

After Egyptians expressed shock at another video clip — the images of police officers stripping and beating a male protester in Cairo that were broadcast live on Friday night — one activist, Sarah Naguib, argued that such brutality is depressingly routine two years after the Egyptian revolution began.

Everyone is so shocked by the video. This is what happens to women during mob sexual assault. — Sarahngb (@Sarahngb) 1 Feb 13

Despite that reality, the Op Anti-SH activists vow to continue their struggle.

Our fight against mob sexual assaults is at the heart of the revolution, against a regime & a mentality that are killing us. We won´t stop! — قوة ضد التحرش (@OpAntiSH) 2 Feb 13

In a video interview on the initiative published on Saturday, one of the women involved in Op Anti-SH, Engy Ghozlan, said: “This is our country, and we will not be silent about sexual harassment, not the type that happens to us every day, nor that of Tahrir. It will end, it cannot continue, because we believe Egypt deserves better.”

“In Egypt,” she added, “there is no revolution without the participation of women or without their security.”