The Iranian regime clamped down ahead of the protests.
Scores of Iranian security forces were on the streets of Tehran on Monday to prevent a planned opposition rally in solidarity with popular uprisings in Egypt and Tunisia that toppled their presidents, witnesses said.
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Iranian authorities refused a request by opposition leaders Mirhossein Mousavi and Mehdi Karroubi to stage the rally for fear of a revival of anti-government mass protests that shook the country after a disputed presidential vote in 2009.
The Iranian regime placed opposition leader Mir Hossein Mousavi under house arrest before the protests today.
Iran Press News is reporting that police are using firearms to disperse the crowds in Tehran.
UPDATE: The protesters in Esfahan are chanting “Death to Dictators.”