Catholic Social Teaching insists that participating in an unjust structure (social, economic, political) makes a person guilty of sin. Do you think it is fair of the Church to call a person sinful for contributing to these structural sins?

Catholic Social Teaching insists that participating in an unjust structure (social, economic, political) makes a person guilty of sin. Do you think it is fair of the Church to call a person sinful for contributing to these structural sins?