In Germany, parents are ordered to rat on their children for sharing files.

This is an example of collective responsibility: "You over there! Watch that group and report any disobedience! If you ever fail to report them, we will punish you for their disobedience."

Germany has imposed other forms of collective responsibility to the repression of sharing.

To try to stop people from sharing copies is unjust at the root. That is why it tends to lead to unjust measures such as collective responsibility.