Cooper and his team were walking in Tahrir square through a large crowd of Mubarak supporters when the scene turned ugly. The crowd had let him walk for several minutes into the square when one man leaped out of the crowd, screaming, and attempted to grab the camera.
When he then began to attack Cooper's crew, people in the crowd began to join in, at which point the team decided to leave the square.
They began walking away from the group who had begun the assault on them, but as they walked out of the square, various other groups rushed towards them, shouting, punching, and kicking the crew.
Cooper can be heard in video saying "I've been hit now, like, ten times," and "the Egyptian soldiers are doing nothing."
In the video, crowds can be seen running towards Cooper's team several times as they attempted to exit the square. When the team began to run, they were instructed by a few friendly Egyptians to walk, or else it would be interpreted as encouragement to the violent crowd.
Once they had escaped to safety, Cooper reported that aside from kicking and punching the crew, the crowd had thrown bottles, bloodied the camera operator's eye, and tried to rip a female crew member's clothes off.
In the hours since the attack on Cooper's team, it has become apparent that journalists were a target, Wednesday. According to MSNBC's Richard Engel and Al Jazeera, other journalists were attacked similarly during the day.
The US State Department has advised American citizens to "report to airport immediately," saying "Further delay is not advisable."
No word on whether Cooper and his team will heed their advice.
Editor's note: The original version of this blog included a pair of YouTube videos that have since been disabled.