... do everything to avoid intergration. They have their own areas, their own religion, their own language, their women are isolated and hidden from society at large, they eat different food, they don't drink alcohol, or eat pork.
They have different religous holidays, they look different, they have their own 'bible', they have their own ... law, they have their own religous schools, they have different morals and standards, they have their own butchers, they slaughter their animals differently, they dress differently, they have different churches....