Relativity

We say that all is "relative", i.e. everything has a meaning only if we consider it in relation to something else. By itself, in fact, it does not mean anything. It is simply "is". This can also be referred to great concepts such as Fatherland and religion, for instance. Think about boundaries. They are just pieces of land that signify the division between countries exclusively according to a geographical map drawn by political/historical events. Take Christmas (or any celebration of any religion). It is highly meaningful in Western countries (generalizing) while in the East (still generalizing) it is just a working day like any other.

A sad consideration? It depends. This, too, is relative. It is sad if we think that such state of being divides people. Otherwise, it is just a situation to be accepted as it is, with no implications whatsoever.