Breaking:

Sources in Tehran said that the protesters attempted to move towards Baharestan Square near parliament while holding hands. Many were wearing black bracelets in memory of Neda Soltani, the young woman who was shot to death by security forces last Saturday and became a symbol for the opposition's struggle. Other carried pictures of Soltani, or candles.

On Tuesday the website of reformist presidential candidate Mir Hossein Mousavi reported that the rally near parliament was not organized by his people, and was an independent initiative.

Unofficial reports claimed that large Revolutionary Guard forces and members of the Basij militia encircled parliament building and closed off the square. The forces attacked protesters who were holding up Soltani's pictures.

Several are reported dead, but no confirmed numbers.

Meanwhile, Khameni has said the vote stands and he is unmoved by the protests:

"Once lawlessness becomes a norm, things will be complicated and the interests of people will be undermined," Khamenei said after a meeting with lawmakers, according to state television.

"Everyone should respect the law," he said. "Even in the case of the recent incidents, I have been, still am and will continue to be insisting on the implementation of the law... Certainly, neither the system nor the people will yield to pressure under any circumstances."

Right. Because the rule of law is way up on Khameni's list of priorities.

To prove it, Iran's state media is trying to explain away the killing of Neda, "the Angel of Iran":

Iran blamed the death of the woman known to the world simply as Neda squarely on "those groups who want to create division in the nation," saying they planned the woman's killing "to accuse the Islamic republic of ruthlessly dealing with the opposition," according to IRNA, Iran's state-run news agency.

But the protests are working—they have put autocratic governments across the Middle East on notice. From the Lebanon's Daily Star:

The fact is lost on no one that the Iranian regime has effectively withstood American, Israeli, European, and UN pressures, threats and sanctions for years, but found itself much more vulnerable to the spontaneous rebellion of many of its own citizens who felt degraded by the falsification of election results by the government.