Angela Merkel has been a great proponent of multiculturalism.  Unfortunately, the massive influx of migrants to Germany had no real intention of becoming Germans.  Instead, they expected to remain Syrians, Turks, Pakistanis or Moroccans, but with first world incomes and benefits.   Within this  patchwork of parallel societies reside groups of people with values that are inimical to those of the host country. Radical Islam is the most visible example, and incidents of terrorism, mass sexual assaults and other crimes are some of the consequences.  If it is allowed to flourish, it could within the next 20-30 years destroy the traditions and integrity of many western European countries, including their economies.