Egypt's State Security has been feared throughout the reign of Hosni Mubarak. The 500,000 troops have been accused of some of the worst human rights violations in attempts to suppress dissent against the former president--so maybe it's not surprising that Egyptians finally decided to take matters into their own hands. Protestors barged into several state security offices, including the main headquarters, searching for secret documents (many later showed up on Facebook) and detainees. You can see some of this for yourself:
The filmmaker wrote, "The video speaks for itself. We stormed into the notorious political police main HQ in Cairo after the authorities didn't dismantle the apparatus. We did it ourselves. The end of the video shows an former Islamist detainee who discovered an electric torture tool explaining how he was tortured on it."