As the White House prepares to host more than 40 African heads of state for the upcoming U.S.-Africa Leaders Summit, civil society actors from the U.S., Africa and the international community are urging the Barack Obama administration to use the summit as an opportunity to more thoroughly address some of Africa’s most pressing human rights violations.

Every day, Celina Maria de Souza rises before dawn, and after taking four of her children to the nearby school she climbs down the 180 steps that separate her home on a steep hill from the flat part of this Brazilian city, to go to her job as a domestic. In the evening she makes the long trek back up.