But SAM, that is the heart of the problem. Periodically, as Israel expands, Israel states "That land is not your. That house is illegally constructed." (No Israeli permit for its construction is on file in the Israeli land / zoning records, etc.) “Shut up about your grandfather being born there before Israel existed. Just get out with your life, while you still can.”
The Negev Bedouin's claim to the Negev (and Sinai, before being forced out of it) land has been unintentionally supported by Israeli excavation for new Israeli settler homes. That digging discovered a Bedouin graveyard more than 5000 years old. An documented “occupational claim” approximately 100 times longer that Israel has existed, but there were not recorded deeds* or other records on file in Israel, so the Bedouins did not own the land the new Israeli settlers were building their home on from the Israeli POV.
You can only defend your home, if it is "your home" - Israel has repeated said to the occupiers of these buildings: "You do not own them, we do." Shut up about ancient graveyards and where you grandfather was born. – We do not want to hear more about the olive grove he planted and we bulldozed down last month.” etc. – “Just be happy we let you live to move to some other land. - If you cooperate, we will even give you bus fare to Jordan.”
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*In many cased the Bedouins did have written deeds, which were issued by the old Ottoman Empire officials, but they too were worthless, from the Israeli POV.