The situation is not a sin. It is merely the combined effect of a lot of people. And just because you can pin down one sin in the batch does not mean that child is responsible for the situation. Your children are not a situation. They are individuals. Disciplining an individual for a collective situation is a great way to alienate your children. It is not only unjust and unkind, but it is untrue to the gospel. Christ takes our sins; he does not load us down with someone else’s. He sees what we have done and takes it from us and bears it with him to the cross. What you just did was toss your burden of guilt onto a child to have her carry it.