Protests Continue In Egypt's Tahrir Square

The transcript describes a scene of protestors in Tahir Square who quickly mobilize to defend against perceived threats. They remain vigilant day and night, responding to ongoing attacks and maintaining their resistance. The situation is tense, with protestors ready to defend themselves at any moment.

What is the significance of the phrase 'a call to arms' in the context of the protest?

What does the text imply about the ongoing conflict and the actions of the authorities?