If the man killed really is Anis Amri, the Tunisian who used a truck to attack, maim and kill German Christmas shoppers in Berlin, it's too bad the authorities couldn't capture him alive to find out the reason he did it and whether he had  help or contacts in Europe.

I still wonder what it is that inspires, incites and leads  Muslim followers of Islam to try to attack or to attack, maim and kill innocent, civilian non believers in Europe and in many countries around the world.

Where do Muslim followers of Islam get the idea they must kill non believers?