One, however, should never use more force than is necessary to repel an attacker . Still, if killing an attacker is the only possible way to insure one s safety, it is not ruled out. Legitimate defense means not only protecting oneself, but also protecting others such as one s spouse, one s children, or other innocent persons. A nation has the right to call its citizens to arms to protect itself from aggressors. It also has the right to execute criminals who threaten the public s safety.
Abortion is another grave offense against the fifth commandment.
The Church s teaching against abortion is not a teaching that developed in the twentieth century, but one that dates back all the way to its beginning in the first century. Anyone who procures an abortion, assists with an abortion, or advises an abortion is guilty of a grave sin . Such a person is automatically excommunicated from the Church . Likewise, prenatal care of an unborn child must be just that care toward safeguarding or healing the life of an unborn child. Aborting an unborn child because of deformities or other health problems still constitutes an abortion.