ISIS, the Pakistani Taliban and the man who terrorized coffee drinkers in Sydney. All three have the same thing in common, no regard for human life whether they be Muslim or Non-Muslim.
On the contrary Allah has said in Chapter 5 that the one who kills without just cause such as murder and creating chaos in the land it is as if he has killed the whole of mankind. And the one who saves a life is like the one who has saved the whole of mankind.
It is important to know that Allah uses the word (نفس) or person without the definite article in a sentence of affirmation showing that any life that is taken without just cause is indeed a life taken unjustly and in contradiction of the legislation of Islaam.
Likewise, the Messenger of Allah (صلى الله عليه و سلم) called them the worst of creation showing how evil and sinister such people are. And showing how much of a threat they are to mankind at large and to the Muslims who don’t follow their wicked and deviant ideology.
This same callousness, and coldhearted behaviour could only be found with the likes of Robispierre, Hitler, Stalin, the Conquistadores of Spain and others who care not about the sanctity of human life. Indeed such behaviour has nothing to do with religion but it is the result of a myopic, psychotic mind.