Argument: The unborn are voiceless/vulnerable and should be protected from abortion
Edward “Ted” Kennedy, U.S. Senator and former presidential candidate, now in favor of legalized abortion, in a letter to a constituent (August 3, 1971) - "I share the confidence of those who feel that America is working to care for its unwanted as well as wanted children, protecting particularly those who cannot protect themselves."
U.S. Conference of Catholic Bishops, Living the Gospel of Life: A Challenge to American Catholics, 1998 - "Abortion and euthanasia have become preeminent threats to human dignity because they directly attack life itself, the most fundamental human good and the condition for all others. They are committed against those who are weakest and most defenseless, those who are genuinely 'the poorest of the poor.' They are endorsed increasingly without the veil of euphemism, as supporters of abortion and euthanasia freely concede these are killings even as they promote them. Sadly, they are practiced in those communities which ordinarily provide a safe haven for the weak -- the family and the healing professions. Such direct attacks on human life, once crimes, are today legitimized by governments sworn to protect the weak and marginalized."