TODAY | November 22, 2011
>> we begin in egypt where violent demonstrations enter a fourth day now protesters calling for a second revolution and a million man march on cairo's tahrir square. nbc's chief foreign correspondent richard engel is there with the latest. good morning.
>> reporter: good morning, natalie. that million man march is certainly under way and while it's unclear they've reached that number, as you can see, there are tens of thousands of people here. just a short while ago they were moving a coffin through these crowds and behind me you can see someone has climbed up very draining russly to the top of a light post. there have been more clashes this morning and also egyptian television is broadcasting what it claims are the images of three american students, it says, were detained allegedly for taking part in these clashes, throwing molotov cocktails . the u.s. embassy says it's investigating. natalie?
>> richard engel there in tahrir square, be careful there, richard, thank you.