Men and their work are much more closely interrelated to-day all over our planet than they were ever before. It has been rightly observed that in our present age we are witnessing a Voelkerwanderung, a migration such as never was seen before. […] All racial distinctions, all strict local separation between various linguistic, cultural and racial units are becoming more and more obsolete, and this at a very rapid pace. The time may not be very distant when the more marked distinctive features dividing mankind into racial and national groups will have been more or less obliterated, and one general human ‘mongrel’ type will have evolved in their stead.

Franz Borkenau: Socialism National or International (1942)