Pro-civilian leaders in Sudan have called for mass protests on Thursday, the anniversary of Sudan’s 1964 revolution, which overthrew a military government led by Major General Ibrahim Abboud. Al Jazeera reports that their call stems from rising tensions between those in charge of steering the country towards elections, and is in response to a continuing sit-in staged since last week in front of the presidential palace in the capital, Khartoum, by an alliance of rebel groups and political entities.