OK Guys ... Christ established the Eucharist. Remember he said those words. The Eucharist was the new sacrifice, replacing the temple sacrifice. The Bible explains this. Jews and Christians have agreed to disagree on this one. It is an unbloody sacrifice in that you don't "see" anything bloody. Early Christians debated the nature of Christ and the nature of the Eucharist. The final resolutions were recorded as dogma. This is all documented. The Church has got scripture, written records, witnesses, tradition. The belief in the Eucharist has been shared by millions of wonderful and even heroic people. The Kennedys were Catholic ... I just don't think you need to deal with this here.