He was a relative unknown until a few weeks ago, but Ahmed al-Mansour has managed to develop a cult following in his native Egypt after Syrian rebels toppled the Assad dynasty.

An Egyptian national who first began fighting with Syrian rebels against Bashar al-Assad in 2013, Mansour has been churning out videos since the rebels captured Damascus, calling on Egyptian President Abdel Fattah el-Sisi to step down after 12 years in power.

Using the hashtag “It’s your turn, Dictator”, a phrase based on the 2011 Syrian rallying cry “It’s your turn, Doctor”, Mansour has been posting near-daily content lamenting the dire political and economic conditions in the North African country.

In recent months, Sisi, an ex-army chief who came to power in 2013 after staging a coup against Egypt’s first democratically elected president Mohamed Morsi, has been facing mounting public anger over the carnage unfolding in neighbouring Gaza as well as the country’s flagging economy.