"After achieving the intended aim, we pulled out from this place triumphantly," Fadhil al-Gezzi, one of the protesters, told AP.
"We rubbed America's nose in the dirt,” he added.
Helicopters of US Marines had arrived overnight to help guard the main area of the embassy complex. US forces fired tear gas and rubber bullets at the protesters.
On Sunday, US forces conducted drone strikes on a number of Kata'ib Hezbollah bases in Iraq's western Anbar province, killing at least 25 individuals and leaving another 51 injured, according to the Popular Mobilization Units (PMU).
Following the strikes, the Pentagon issued a statement saying that it had targeted three locations of the Iraqi fighters in Iraq and two in Syria in response to alleged attacks targeting American forces.
Kata’ib Hezbollah is part of the PMU. The PMU, also known as Hashd al-Sha’abi, played a key role in defeating the Daesh terrorist group that had occupied parts of Iraq since 2014.