Wednesday marked the third day of street demonstrations in Iran over the controversial outcome in the country's presidential race.

The pro-reform candidate says the vote was rigged, and he is calling for a new election.

The Iranian military is warning of a crackdown on protestors and the government is trying to shut down foreign media from reporting on any events.

But protestors are capturing events as they happen on video using cell phone cameras.

Meanwhile, the regime has also been staging its own pro-government demonstrations, busing in supporters from rural areas of Iran.

Iran's Revolutionary Guard, the country's most powerful military group, has issued a warning to online media to stop posting inflamatory content or face legal action.

The Revolutionary Guard is an elite military force that reports directly to Iran's supreme leader. The group has ordered Iranian websites and bloggers to remove materials that create tension.

It is the regime's latest attempt to shut down media coverage of the government crackdown on protestors.

Click the player to watch CBN News International Correspondent George Thomas give his analysis about the power of the Internet in keeping the Iranian protests alive.