"The Islamists really are leeches and vermin that aim to destroy a nation from within like a cancer (mixing metaphors here)."
Kosovo comes to mind. Just breed like a rabbit (families w/15-25 children not unusual), throw in a little polygamy here and there, and voila, you have overrun any country you live in, in a couple of generations or so. Then you claim it as your land, as you have the majority population. That's what happened to the unhappy Serbs in Kosovo, and it can happen easily in other European countries, especially the littler ones, like Holland, or Belguim, or even bigger ones like Sweden, France, Germany, and Great Britain. Coming to a neighborhood near you.