Christian families are the largest landowners in Bethlehem and have often been subject to theft of property. Bethlehem's core of traditional Christian and Muslim families speak of the rise of a 'foreign', more conservative, Islamic Hebronite class as changing the traditional regional identity of the town, as are the villages dominated by the Ta'amre Bedouin clans close to Bethlehem. Rising Muslim land purchase, said at times to be Saudi-financed, and incidents of land theft with forged documents, except in Beit Sahour where Christian and Muslims share a strong sense of local identity, are seen by Christians as making their demographic presence vulnerable. Christians are often described as of Yamani descent (as are some Muslim clans), vs the al-Qaysi Muslim clans, respectively from southern and northern Arabia. Christians are wary of the international media and of discussing these issues publicly, which involve criticism of fellow Palestinians, since there is a risk that their remarks may be manipulated by outsiders to undermine Palestinian claims to nationhood, distract attention from the crippling impact of Israel's occupation, and conjure up an image of a Muslim drive to oust Christians from Bethlehem.