The first major step was the allowance of communion in the hand while standing???a sharp break from the deeply-ingrained practice of many centuries of kneeling in adoration at the altar rail and receiving on the tongue, like a baby bird being fed by its parent (as we see in countless medieval depictions of the pelican that has wounded her breast in order to feed her chicks).
This change had the obvious effect of making people think the Holy Eucharist wasn???t so mysterious and holy after all. If you can just take it in your hand like ordinary food, it might as well be a potato chip distributed at a party.
The feeling of awe and reverence towards the Blessed Sacrament was systematically diminished and undermined through this modernist reintroduction of an ancient practice that had long since been discontinued by the Church in her pastoral wisdom.
Nor, as has been well documented, did the faithful themselves request the abolition of the custom of receiving on the tongue while kneeling; it was imposed by the self-styled ???experts.???
More more more in this piece by the excellent Peter Kwasniewski . . .