It is indeed not a good thing when a community (Not Israel or Jews in general in that case)discriminate aainst someone for any reason. There are many Arabs in Israel who build on their own land. There are also incidents like this for which we are not proud of. However your comment mentioning - Tribal Mentality - for all Jews is uncalled for as you always do and indicative of your discriminating behaviour.
Northern California wildfire doubles in size, displaces thousands (Reuters)
from the article: Jewish town won't let Arab build home on his own land