German Govn't Teaching Migrants How to Pick Up European Women, page-31

I reckon you'd be one of those liberal types who calls for more integration, but who then moves out of the neighbourhood after it becomes culturally enriched through diversity. 600,000 native Britons, those with the means, moved out of London to get away from such enrichment. There is even a colloquial phrase to describe that type of behaviour, can you guess what it is called?