The Gaza Strip's population has long been predominantly Sunni, with almost no presence of Shiism. But growing Iranian support for some small Palestinian groups in the enclave has led to a spread of Shiism among faction leaders.
This is the case with Harakat al-Sabireen (Movement of Those Who Endure With Patience). The Hamas government had banned Harakat al-Sabireen and its activities in Gaza in 2015 but failed to suspend its Iranian-backed charity, the Imam Khomeini Relief Foundation.