When the devotion is centered on a saint, that deepens the community aspect by extending it beyond death.
From this point of view, I think I can now understand the ways in which we pay respect to Mary under many appellations like "Our Lady of Czestochowa", "Our Lady of Mount Carmel" and "Our Lady of Perpetual Help." For the different appellations connect one with the different overlapping communities (ethnic, monastic, etc.) that are inspired by that aspect of our Lady's character and life. And part of the
Thus, those Christians, especially Catholics, who focus on the horizontal aspects of the Christian life, who take the notion of community as central, should love popular devotions. (One thinks here of Fr. Andrew Greeley as an example of this love.)