@josemanuel anxiety of the unknown is normal and natural. To dismiss those fears as xenophobia is unproductive. People are naturally tribal and like the culture they identify with.
@josemanuel you're thinking that one mode of thinking is backwards and one is forwards, but that's simplistic IMO. Our tendency to become tribal is an evolutionary advantage from when we were a tribal society. Tribes who worked together grew, and those who didn't didn't make it.
Right and wrong is only an extension of our current cultural norms, but those can change, particularly when stressed or when we experience a large change.
@Demosthenes Everything evolves and progresses by being open to change. As natural as it may be to be tribal and identify with one's own culture, being afraid new tribes, cultures, languages or developments is a sign of backwards thinking, IMO. That's why bravery is a virtue and cowardice is not.