I've just read a really wonderful post, a homily by Jane Redmont, over at Acts of Hope, on the Visitation.
"Remember what Mary says in this Gospel: God is doing mighty things for lowly people. A woman will be called blessed forever, though she lives in a world where men rule. The mighty are deposed from their thrones. The poor and the hungry are not just satisfied, they are heard and remembered.
I think this woman is talking about a revolution."
Yes! Oh thank you Jane! No one I've read has put it quite so well...