Indeed, we know not the circumstances that led them to be homeless. It’s best to have empathy towards the people of the streets. It could easily happen to anyone. In Japan there aren’t many homeless but it is interesting that the ones I see don’t want anything from you usually. The homeless in Tokyo usually ask foreigners for help as the Japanese almost never take the time to even look their way. Great way to bring attention to the ills of the world and have us think more open to the homeless. The song is on point.