Al-Jazeera Video: Violence flares in Egypt ahead of opposition protests

"An American teacher and an Egyptian journalist were killed in Egypt as clashes erupted during rival demonstrations by tens of thousands of people for and against President Mohamed Morsi a year after his election. AFP reported that at least three people have been killed in the protests in total, with tensions rising ahead of a mass opposition rally planned for Sunday. The US citizen, a 21-year-old who reportedly worked for an American cultural centre in the coastal city of Alexandria, was killed on Friday as he took photographs of a demonstration, officials said."