Egyption protests

I had watched a tiny bit of this on the news but I didn't really know much about the subject. Just that everyone hated the Egyption president Hosni Mubarak and wanted him to step down from his 30 year rule. There were strikes and labor protests spread acorss the country, against the militaries will. Another part of the protest that I didn't know about was that they changed the constitution, so real change was being done along with the president being changed. This is a very important part in a nations histroy, like the U.S., after we had our constitution written the country started to fall in place. If you have a constitution that your people disagree with and is unfair, you can't get anywhere during that time until it is switched. This, I beleive, was as important as switching the president by the sounds of it.
In the first video I saw there were a lot of people running franticly from a smoke cloud that looked to be coming towards them. It is unclear what they were running from but what was clear is how chaotic the whole situation was. There were no laws during this time because there wasn't enough police or military to enforce it. In the next video that I saw there was stopped traffic from both directions. Also there are a suprising amount of people who are shooting stuff into the air I think they are flares but I am not sure. Also it looks like things are being shot near those people. It looks like an overall very dangerous situation. It is a lot of pissed off people with weapons and nothing is being done about it.