It is, but natural reaction is wrong. I still have much bigger chance of dying in a car accident than a terrorist attack. In general, the natural reaction to such events was fine 6000 years ago, but in today's hyperconnected, media-driven society, awareness of a danger is usually inversely proportional to the chance of it happening to you.
But I also know that general population has this natural reaction, and - as politicians follow the voice of people, instead of the voice of reason - it leads to very bad outcomes. I am afraid of those bad outcomes.