Glenn Greenwald lays it out, in The Intercept:
So now, with yesterday’s WSJ report, we witness the tawdry spectacle of large numbers of people who for years were fine with, and even giddy about, NSA mass surveillance. But now they’ve learned that they themselves, or the officials of the foreign country they most love, have been caught up in this surveillance dragnet, and they can hardly contain their indignation. Suddenly, privacy is of the highest value because now it’s their privacy, rather than just yours, that is invaded.