German authorities are now looking for a Tunisian man in the case where a person used a truck to attack and kill innocent, civilian, Christmas shoppers in Berlin. 

If the attacker turns out to be a Muslim follower of Islam, what is it that inspires, incites and leads some followers of Islam to try to attack or to attack and kill innocent, civilian, non believers in many countries around the world?

Where do some Muslims get the idea they must kill innocent, civilian non believers?

I guess Canadians had better be vigilant.