In what african country are many protesters demanding an immediate return to civilian rule following the recent military coup that toppled their longtime leader

Sudan

Explanation:

The name of that longtime leader is Omar al-Bashin. He initially took power in 1989 and appointed himself as a president for the life time until eventually taken down in 2019.

The coup started due to long dissatisfaction that people had in Sudanese economy and political instability. But the peak of the coup was when He was involved in a genocide ,  Killing members of the Fur, Masalit and Zaghawa ethnic groups