Should we extend that "zero tolerance" principle for, say, traffic deaths? Even 1 death is too much right? Yet over a hundred people die on European roads every day. Surely we should tackle this many times more seriously than we tackle the comparatively minor issue of Islamic terrorism?

What about pollution? Kills thousands upon thousands of people too! Why are we wasting our time and attention with 24/7 news reports about terrorism every time some nutter stabs someone in the street, when we could be directing our efforts towards eradicating coal, diesel engines, etc?

See where I'm going with this?