 Euthanasia advocacy in the U.S. peaked again during the 1930s and diminished significantly during and after World War II.Euthanasia efforts were revived during the 1960s and 1970s, under the right-to-die rubric, physician assisted death in liberal bioethics, and through advance directives and do not resuscitate orders.Several major court cases advanced the legal rights of patients, or their guardians, to practice at least voluntary passive euthanasia (physician assisted death).