Sins of the System: Trauma, Guns, Tragedy, and the Betrayal of Our ChildreneBookSins of the System: Trauma, Guns, Tragedy, and the Betrayal of Our ChildrenkaryaRegina M. GriegoPenilaian: 5 dari 5 bintang5/5Simpan Sins of the System: Trauma, Guns, Tragedy, and the Betrayal of Our Children untuk nanti