“Migration has been a constant, ‘indigenous’ is relative. Ten thousand years of human displacement have shrunk the genetic distance between populations to the point where ethnic divisions are losing meaning. The desire to belong is as strong as ever, and as it becomes harder to see the difference between ‘them’ and ‘us’, linguistic and cultural boundaries are being guarded more jealously. Language is becoming a battleground in the identity wars, and preserving our linguistic ‘purity’ a justification used by those who want to raise walls.”