I'm just wondering what's the magic number of immigrant terrorist-related deaths you'll tolerate in places like Great Britain, France, Spain, Germany etc.  being they made the same mistake not realizing so many want to transform their new "homeland" under Muslim principles?

Europe has also imported a big problem even though most are fine as you say, but why take the risk?

Does the billions needed each year for additional security and loss to the economy in areas like tourism outweigh what the "fine" one's contribute?