Why do they write separate articles on Palestinian Christians?

"Fr Ibrahim, who insists the Israeli occupation of the West Bank is the main factor driving Christians away, is less optimistic about the reasons, arguing that it is because those Christians with enough money to leave have done so, leaving the poorest to stay behind. Nor is Mr Batarseh saying that he is remotely happy with the city's wider economy, reeling off a list of negative factors: the occupation; the loss of agricultural land swallowed by neighbouring Jewish settlements; and the barrier encircling much of the city – "If it was there for security it wouldn't have been built inside Palestinian areas"; and Israel's denial of permits to most of Bethlehem's citizens who want to work in Jerusalem."