Funny, the pagans accused the early Christians of being exactly that: cannibals. Did you get it from them?
Cannibals kill someone in order to eat him. The Eucharist is precisely the reverse of cannibalism, because the Jesus we eat is alive, more alive than we are.
Eating someone alive or dead - is cannibalism.
AHhhh...
Roadkill.
Leviticus 19:26
You are not to eat anything with blood in it...
Not all cannibals:
Alpers and Lindenbaum’s research conclusively demonstrated that kuru [neurological disorder] spread easily and rapidly in the Fore people due to their endocannibalistic funeral practices, in which relatives consumed the bodies of the deceased to return the “life force” of the deceased to the hamlet, a Fore societal subunit. - https://en.wikipedia.org/wiki/Kuru_%...9#Transmission
he custom of eating bread sacramentally as the body of a god was practised by the Aztecs before the discovery and conquest of Mexico by the Spaniards."
The May ceremony is thus described by the historian Acosta: “The Mexicans in the month of May made their principal feast to their god Vitzilipuztli, and two days before this feast, the virgins whereof I have spoken (the which were shut up and secluded in the same temple and were as it were religious women) did mingle a quantity of the seed of beets with roasted maize, and then they did mould it with honey, making an idol...all the virgins came out of their convent, bringing pieces of paste compounded of beets and roasted maize, which was of the same paste whereof their idol was made and compounded, and they were of the fashion of great bones. They delivered them to the young men, who carried them up and laid them at the idol’s feet, wherewith they filled the whole place that it could receive no more. They called these morsels of paste the flesh and bones of Vitzilipuztli.
...then putting themselves in order about those morsels and pieces of paste, they used certain ceremonies with singing and dancing. By means whereof they were blessed and consecrated for the flesh and bones of this idol. This ceremony and blessing (whereby they were taken for the flesh and bones of the idol) being ended, they honoured those pieces in the same sort as their god....then putting themselves in order about those morsels and pieces of paste, they used certain ceremonies with singing and dancing. By means whereof they were blessed and consecrated for the flesh and bones of this idol. This ceremony and blessing (whereby they were taken for the flesh and bones of the idol) being ended, they honoured those pieces in the same sort as their god...
And this should be eaten at the point of day, and they should drink no water nor any other thing till after noon: they held it for an ill sign, yea, for sacrilege to do the contrary:...and then they gave them to the people in manner of a communion, beginning with the greater, and continuing unto the rest, both men, women, and little children, who received it with such tears, fear, and reverence as it was an admirable thing, saying that they did eat the flesh and bones of God, where-with they were grieved. Such as had any sick folks demanded thereof for them, and carried it with great reverence and veneration.”
...They believed that by consecrating bread their priests could turn it into the very body of their god, so that all who thereupon partook of the consecrated bread entered into a mystic communion with the deity by receiving a portion of his divine substance into themselves.
The doctrine of transubstantiation, or the magical conversion of bread into flesh, was also familiar to the Aryans of ancient India long before the spread and even the rise of Christianity. The Brahmans taught that the rice-cakes offered in sacrifice were substitutes for human beings, and that they were actually converted into the real bodies of men by the manipulation of the priest.
...At the festival of the winter solstice in December the Aztecs killed their god Huitzilopochtli in effigy first and ate him afterwards. - http://www.bartleby.com/196/121.html
There are some differences, but these have far more in common with the Cath idea of the Eucharist than anything seen in Scripture interpretive of the words of the last supper.
In conclusion, as with Roman Catholicism as a whole, the Cath Eucharist is not, as shown by God's grace, that which the Holy Spirit reveals in the Scriptural testimony of of the NT church, but it is part of the progressive deformation of the NT church, thus requiring the specious art of "development of doctrine." as testified to before.