The movement, which appears to have been started by Gazans in exile, is calling for surviving residents in the enclave to gather en masse.

"You will not break our spirits, nor will our resolve falter," the group's Facebook page says, reportedly referring to Hamas, which still governs the streets of Gaza.

"We are coming, we are coming, today or the day after tomorrow, and you are destined to fall and depart, gathered in the depths of hell and its darkness."

Big talk from people who aren't actually there in Gaza and so aren't in much danger from reprisals.