It's this one. It came out yesterday from Paul Krugman at The New York Times:
Of course there are bad decisions and bad programs. But modern American political discourse is dominated by cheap cynicism about public policy, a free-floating contempt for any and all efforts to improve our lives. And this cheap cynicism is completely unjustified. It’s true that government-hating politicians can sometimes turn their predictions of failure into self-fulfilling prophecies, but when leaders want to make government work, they can...
Conservatives want you to believe that while the goals of public programs on health, energy and more may be laudable, experience shows that such programs are doomed to failure. Don’t believe them. Yes, sometimes government officials, being human, get things wrong. But we’re actually surrounded by examples of government success, which they don’t want you to notice.
Now. Go. Read it all. It's brief, I assure you.
It will do you---and your country---good.