Protesters in Cairo
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Egypt: Protest at Cairo presidential palace

4 December 2012 Last updated at 17:49 GMT

Protesters have clashed with riot police in the Egyptian capital Cairo in the latest demonstration against President Morsi and a new Constitution.

Protesters broke through police lines near the presidential palace and police responded by firing tear gas into the crowd.

The constitution will be put to a referendum later this month.

John Leyne reports.