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Despite state-organised rallies in support of Muammar Gaddaffi, thousands of pro-democracy protesters defy a security crackdown to demand an end to his 42-year rule.

Videos posted online claim to show demonstrators setting fire to the police headquarters in the eastern city of Benghazi. 

Al Jazeera speaks to a witness who describes seeing protesters shot dead by Gaddaffi loyalists.

Source: Al Jazeera