With the new, harsh crackdown on foreign media, might the coverage of the protests in Iran play out entirely via Twitter and YouTube? Witnesses on the ground in northern Tehran are telling the BBC that a rally even larger than Monday's is currently taking place. Because of the media crackdown, the size of the gathering cannot be confirmed, (nor can its actual existence). If true, the rally is occurring despite calls by Mir Hossein Mousavi to not stage another protest for fear of further violence. Supporters of President Ahmadinejad also rallied Tuesday in central Tehran, setting the stage for a possible confrontation. The BBC reports that eight people died during the massive protests on Monday.