Members of the Ezzedine al-Qassam Brigades, the military wing of the Palestinian Islamist movement Hamas,take part in a rally ahead of the 30th anniversary of Hamas of the founding of the movement in Khan Younis in the southern Gaza, December 5, 2016, The Islamist group Hamas will celebrate its 30th anniversary of founding on December 14. Photo by Ismael Mohamad/ UPI.