Now there's a word I don't get - 'xenophobia'. In all instances where people of vastly different cultures and religions have had to live close together, the ultimate result was bloodshed, with one group becoming dominant over the others through a combination of violence and demographic supplantment. On a small scale, think the 'Zones Urbaines Sensibles'. On a larger scale, think Africa. You can't have people with vastly different cultures and beliefs live together in peace for any extended amount of time. They'll fight, and I think it's only natural to not want that to happen to your nation.