I saw a friend who is a professor at the American University in Cairo. He had a big gash in his head. "Please, help us tell the world what is happening. Tell them how we were viciously attacked," he said. "Tell them we will die here if we have to, but we will NOT turn back."

I couldn't believe that after today's attacks, there were still women in the square who planned to spend the night. A group of young women ran up to us and started hugging and kissing us. "You don't know what your presence means to us," one of the students said. " Please tell Obama that we need him to do more to push Mubarak to go NOW, before more of us get killed."

One way Obama can send a stronger message to Mubarak is to announce that the United States will cut off all aid to this regime. For 30 years the U.S. government has been supporting this autocratic, repressive state. Cutting aid now will send a clear signal that the U.S. government is finally distancing itself from this regime.

Tomorrow, a group of us will go to the U.S. Embassy with this message. We will sit outside the Embassy, despite the risks of being attacked by government thugs, and call on our government to immediately stop all aid to Mubarak's regime. Please join us by taking the same action back home.

Now is the time that the Egyptian people need our solidarity. Don't let there be one more "Made in the USA" teargas canister hurled at these people. Don't let there be one more U.S. bullet or U.S. weapon aimed at them.

The Egyptian people are writing a beautiful chapter in the history of nonviolence revolutions. Let's show them we are on their side.