The 9/11 attacks in the US happened when you were under 10. The London bombings took place when you were a teenager or younger.
There have been bombs and shootings around the world regularly ever since, from the US to Tunisia, Spain to Belgium, Baghdad to Paris.
And because of social media, when something terrible happens to other people - we all know about it, fast.
So are we getting numb? Have we got "fear fatigue"?
Or is it that we're getting better at defiance?
"It shouldn't feel normal but it feels normal," says 21-year-old Aaron in London.