BBC Persian TV's Rana Rahimpou takes a look at some of the videos of demonstrations in Iran that have been sent in to the BBC.
All of the footage is said to be from Saturday, when pro-reformist protesters clashed with riot police on the streets of the capital, Tehran. Iranian state television has reported that 10 people were killed in the violence.
The BBC cannot verify the authenticity of the videos.
A look at footage sent in to the BBC of Iran protests
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