Clashes erupted between protesters and government supporters in the Mediterranean city of Alexandria in Egypt, and gunshots were heard, according to footage by Al-Jazeera television.The clashes followed Egyptian President Hosni Mubarak's speech on Tuesday saying he would not run for a new term. The speech was immediately derided by protesters massed in Cairo's central Tahrir Square. Watching his speech on a giant TV, protesters booed and waved their shoes over their heads at his image in a sign of contempt. "Go, go, go! We are not leaving until he leaves," they chanted. One man screamed, "He doesn't want to say it, he doesn't want to say it."