By midday Thursday, the prices of most basic needs, including food supplies, witnessed a sudden rise, adding to the ordeal facing poor and low-income families.
The billboard incident came almost two days after a call for protesting against deteriorating socioeconomic conditions and human rights violations under Sisi.
Mosques, event halls and cafes across Egypt, where power generators were available, followed the Coptic churches' lead, offering to host students before exams.
One day ahead of World Refugee Day, Amnesty International released a detailed report on the alleged atrocities Sudanese refugees have experienced in Egypt.
With temperatures ranging from a whopping 40 to 50 degrees Celsius, electrical overloads have now added to Egyptian woes, especially in the extremely hot south.