Ask for help from a foreign poem, which seems to be German. The general content is to condemn people for going to ruin.

One day, someone was robbed, because it was none of my business, and I walked away silently. Finally, one day, I was robbed, too, because it was none of others' business, and they walked away silently. Until one day, people are used to walking out of the ruins. Isn't this society full of robbers and everyone is in danger? Ask the author's name, translation, original text, please, my score is not very high, but I really want to know!