There is a well-known (and over used) UK saying that was (I believe) first used in the Second World War. A time when Great Britain stood alone against the might of a conquering army consuming the continent of Europe. It was quite uncertain what the future would hold, and yet the saying was:
Today the world continues to be threatened by angry psychopaths, some of which use terror to try and warp the world. A free world is much easier to attack, than it is to identify and capture or kill those who attack. Quite simply the best answer to terrorism is to carry on living our lives as if they didn’t exist, and use the darker side of special forces and covert techniques to destroy the terrorist factions.
The moment we respond to their cowardly and murderous intentions with fear, we give up something critical to freedom, and frankly we get nothing in return. A very small number of crazy loons with a death wish and a belief in some warped version of a fictional world in which killing, raping, slavery, bigotry and overall cruelty are normalized can only move forward if their mad world view is given form by being accepted by the vast majority.
We cannot ignore acts of terror, but the correct response is to band together as civilized countries and using the rule of law and the weight of technologically superior intelligence and surgical might to identify and destroy the perpetrators. This is not the political arena, but the covert world of offence is the best defense.
Politicians who try and scare the population into giving up their freedom and civilized democratic rights are cowards or worse traitors to the rule of law.
Religion is not an identifier of terrorists, because quite simply anyone can choose to adopt or deny any religious beliefs as they see fit.
Buildings will get blown up, people will die and be maimed, it is terrible and must be stopped. But stopping it does not mean tanks on the streets or soldiers in schools, it means using intelligence, technology and stealth to identify and destroy those who would do harm.
KEEP CALM AND CARRY ON