Now here’s an interesting question, although I think just about all missteps in Sunday liturgy are rooted in a single mistake: namely, the selective reading of the Revised General Instruction on the Roman Missal. Those who prepare the parish liturgy may show exuberance for certain features of the RGIRM, for example keeping the Communion Ministers away from the altar, or teaching the people to bow. At the same time, other features, such as assuring the communion is received from the same sacrifice the people celebrate and not the tabernacle, are widely ignored. That being said, I can give you the top three on my list.
FIRST, the absence of silence. We are asked to call to mind our sins and are given a five second window of opportunity to bring them to mind. The readings move along quickly, with no silence to frame then. The impression is given that we are sharing pious selections from the Bible, rather than being in the presence of Christ and weighing his words, receiving them as a lens to look at our own life’s progress as individuals and community. The General Intercessions are fired off, with no silence to allow the need to sink in and quicken the imagination. After Holy Communion, we rush to completion rather than being given some time of quiet prayer to savor the experience of Eucharist and the call of the Lord to engagement with our world.
SECOND: Communion from the tabernacle. So many parishes treat the tabernacle as a source for communion, ignoring a call that can be traced back more than six hundred years to assure the right of the faithful to receive from the Lord’s table. It takes careful counting, but it is an attainable goal. At the very least, no one should go to the tabernacle until the supply of hosts consecrated at the Mass has been entirely consumed.
THIRD: Inattention to the proper posture for the assembly during the entire time of Communion, until the last person has received. This is a sign of the solidarity of the assembly in Christ, and a reminder that in being received into his Body by eating and drinking, we are receiving one another, our joys and sorrows The indults from the RGIRM already have US Catholics kneeling more than anyone else, but Holy Communion is not one of the dispensations. We stand from the priest’s communion until the last has received. This posture works best when people are zealous for providing silence for “private prayer” and meditation after Holy Communion is complete.
I suspect these are fairly widespread failures, yet I have plenty of concerns that may not be widespread, including the mistake of leaving before we are sent. Here and there, lots of people bail out of the assembly even while communion is still unfolding. Thus, communion is sundered at its highpoint. Worse, the whole purpose of the Mass is short-circuited, the charge to go out into the world as the presence of Christ. For the moment, I am content to throw down the three flags noted above!