To be perfectly frank, the Egyptian people (and a lot of people around the world, actually) don't really enjoy the same freedoms and liberties to free speech like the people in the US do. Unfortunate, but true. It's a rare event to see the Egyptian people speak out so poorly about the President in such volumes; I don't think it was actually kosher for people to speak badly about the President, and sometimes suffered consequences. The government is extremely corrupt, as we are witnessing nowadays. The government even had a hand in forcing some of the mobile networks to sent out texts to the demonstrators--something that probably would not be okay in the US.
Basically, I think that the right to communication without censorship or alteration is something that these people are fighting for, too, with their protests.