It is not a holocaust, its a land battle based on a bible prophecy, Gaza is one of the places named in the bible that it was said they would reclaim. They wont give up because of the prophecies.
http://www.therefinersfire.org/jews_return_to_israel.htm
''''There are many cities in Israel that bear the ancient names of previous Jewish cities. Some of these that bear their Biblical identification include: Cana, Nazareth, Jericho, Nain, Bethany, Bethlehem, Hebron, Gaza, etc. Again, as the ancient nation was in the process of being destroyed, Ezekiel the prophet predicted that many of the ancient cities would, in fact, be re-inhabited and settled in the exact locations.''''''
Ezekiel 36:11; 24 KJV - "And I will multiply upon you man and beast; and they shall increase and bring fruit: and I will settle you after your old estates, and will do better [unto you] than at your beginnings: and ye shall know that I [am] the LORD.... For I will take you from among the heathen, and gather you out of all countries, and will bring you into your own land."