hurt of the world

There is a sadness, I can touch it easily, it is deep and it seems endless. Almost to the extend that I wondered if I am just inducing the hurt/sadness myself somehow. Like for example the hurt that arrises from me pinching my own arm. I can help awake the sadness by visiting certain thoughts or material, like this song. But it is not superficial like an arm's pinch, it comes from deep. Recently a friend asked me if this deep sadness is connected to mourning, the hurt of the world.