[The Conversation Africa] Hundreds of thousands of people staged marches in Sudanese cities on 21 October in support of civilian rule. The demonstrations followed protests backed by rebel groups and some political parties which support a return to military rule. The latest marches started on the anniversary of the 1964 October Revolution, which overthrew a military government and led to a period of parliamentary democracy. They highlight the crisis in the country's troubled transition from authoritarian rule. Joseph Siegle explains