I knew and worked for Dorothy Day (in fact, she was the "mother of the bride" at my wedding, because my family couldn't attend). She was enormously distressed by the VatII changes in the attitude to the Mass and the Eucharist. She permitted Mass to be said at the Worker House on the Lower East Side until one time, after Mass, she found Fr. Daniel Berrigan pouring the Precious Blood down the drain in the kitchen sink. She burst into tears and would never let another Mass be celebrated there.
My point is that even the work of people like Dorothy was motivated by the Sacrifice of the Mass. She grew up and became a Catholic with the Old Mass and the old understanding of it, and this motivated her love of the "Other" until the very end.
In future I won't phrase things like that, implying that Dorothy Day was pleased with the changes of Vatican II.
A few months ago, I heard a radio interview with some fellow who had just written a book about Dorothy Day, Thomas Merton, and Walker Percy as three archetypal Twentieth Century American Catholics.
I never read the book (don't even remember the author's name, though it would be easy to find). But since hearing that interview, I've sometimes added the three names into my discussion of Vatican Two as representatives of the Post-WWII Catholic concern for the Social Gospel, Ecumenism, and Postmodern Alienation.
It is a bad habit, and without careful distinctions does probably sound like I'm blaming them for Vatican II.