MEXICO CITY, Mexico — Mexico has racked up its fair share of menacingly named outlaws in a three-year drug war: the Zetas, Aztecas and even a band of female assassins called the Panthers. Now, if the government gets its way, another name will also make the wanted list: los Twitteros. That’s right. Twitter users are fast becoming public enemy No. 1, at least in Mexico City, where they have angered authorities by warning one another of roadside "alcoholimetro" — or Breathalyzer — checkpoints set up by the police.

MEXICO CITY, Mexico — The first time the couple had sex, the condom tore and the woman became pregnant. They hadn’t been together long, and upon discovering the pregnancy she decided to abort. This was five years ago, when abortion was a widespread yet illegal practice in Mexico. A friend knew of some abortion-inducing pills — a treatment for gastric ulcers with fierce side effects for pregnant women — and bought her a bottle for about $100.

MEXICO CITY, Mexico — Inside Mexico City’s spectacular metropolitan cathedral, Cardinal Norberto Rivera conducted his last Sunday Mass of the year to packed benches. But rather than focusing on the goodwill of the holiday season, Rivera’s sermon centered on what he said was a new affront to the nation’s Roman Catholic values: gay marriage.