They have been able to shut down serious uprisings before so my hopes aren't high. However, I've been monitoring the Twitter sight and there are indications it is spreading to other major cities.
If it lasts until tomorrow, it will be very bloody. Rumors of 50 to 100 dead in Tehran as of a couple of hours ago.
Remember the one riot(forget what year) when they pulled out the gunships(helos) and shot the crap out of the citizens? They will do it again if they have to. It is hard to have a revolt if you are not armed, the principle reason we have a second amendment.