Labor Day? Let's be real. The last thing on our minds this weekend is labor rights. Whether we're fortunate enough to have a job or worrying about how to get one in today's economy, we'll focus more on this summer's last hurrah than on the Tuesday- morning-after travails.

But...

Brazil is famous for its Carnival, the celebration before the morning-after solemnity of Lent that conjures up images of parades and samba pageants, with wildly celebrating participants from all over the world. A thriving tourism industry feeds on those images of free sexual expression during Carnival. But the mornings after...