Since Hamas took control of Gaza in 2007 by violently ousting political rivals, a year after winning national elections, there have been three major wars with Israel and two smaller conflicts.

"Humanity demands that we raise our voices," al-Natour said, "despite suppression by Hamas".

Hamas may be busy fighting Israel, but it's not afraid to punish its critics.

At the end of March, 22-year old Oday al-Rubai was abducted by armed gunmen from a refugee shelter in Gaza City.

Hours later, his body was found covered in horrific wounds.

The Palestinian Independent Commission for Human Rights said Oday had been tortured, calling his death "a grave violation of the right to life and an extrajudicial killing".