On January 5, the Iraqi parliament voted overwhelmingly in favor of a resolution calling for the expulsion of all foreign forces after the US assassination of Iran's General Qassem Soleimani and his Iraqi trenchmate Abu Mahdi al-Muhandis.
Sayed Sadiq al-Hashemi, the director of the Iraqi Center for Studies, said more than 2.5 million took part in the demonstrations on Friday.
Since the early hours on Friday, huge crowds of men, women and children of all ages converged on the Jadriyah neighborhood near Baghdad University.
The protesters were seen carrying banners and chanting slogans calling for the expulsion of US forces.
"Get out, get out, occupier!" some shouted, while others chanted, "Yes to sovereignty!"