Amen to that

We shouldn't be paralyzed by these crazy events
We shouldn't stop our lives just because this or that happens

Actually, even without these criminal attacks we can be hit by any one of countless hazards (electric shock, car accident ..etc. ) and thus we should go on with our lives regardless.

IMHO, this is the best answer to mindless people trying to crush humanity. And also this is the best justification to be better, smarter preppers.