With foreign media blocked by the Iranian government from covering much of the chaos unfolding in the streets of Tehran, citizen reporters have used the Web to help disseminate information to the outside world.
Twitter and Facebook have become key lifelines for Iranian supporters of opposition leader Mir Hossein Mousavi. Amateur videos posted there and on YouTube and other Web sites appear to show riot police and militia members clashing with protesters.
See below for amateur video produced from inside Iran, some of which has not been confirmed as authentic:
See below for some of FOX News' coverage of the unrest: