You just proved my point the moment you called me racist. The Zygon scenario is a perfect analogue to Muslim immigration into Europe, decision to allow them onto Earth/into Europe made on an emotional basis without care or concern for long term stability. They look like us, they sound like us, but they're not us, but they'll eventually outbreed us and consume our resources. I just care about the numbers and how there'll be too many people for the infrastructure to cope with. You immediately dismiss it as racist instead of actually looking at the long term practicality of the situation. Racist, Nazi, whatever you care to use as a dismissive term. Thank you for proving my point.