Actually I understand Sebcrea. Here is a definition of reality:

Reality is the state of things as they actually exist, rather than as they may appear or may be thought to be.[1] In its widest definition, reality includes everything that is and has being, whether or not it is observable or comprehensible.

This means, reality is independent of our thinking or our religion. And history is something that exists no matter what we think about it. The same counts for already happened events like terror acts. They are reality.

Thus Sebcrea's statement is true.