TOPSHOTS Demonstrators protest outside the entrance to Downing Street in central London on November 28, 2015, against the British government's proposed involvement in air strikes against the Islamic State (IS) group in Syria. Thousands of people were expected to protest in London Saturday against Britain potentially joining air strikes against the Islamic State (IS) group in Syria. Parliament is expected to vote on the issue next week after Prime Minister David Cameron pushed MPs to back the move in the wake of this month's Paris attacks. AFP PHOTO / LEON NEAL