Bertha Mejia is a 53-year-old grandmother who fled political violence and sexual abuse in her native El Salvador as a girl. She has four U.S. citizen children and is the primary caretaker for her 9-year-old grandson, Pablo. The victim of rape at the hands of her employer, Ms. Mejia has a strong case for a "U-visa," a type of visa for victims of crime who cooperate with law enforcement. The police have already certified that Ms. Mejia is a victim who has assisted the police in apprehending the perpetrator.

No one wants something as valuable as their credit card numbers to fall into the wrong hands. That's why we limit private uses of this type of personal data. But what about government agencies that hold some of your most vulnerable, confidential information? We need to ensure that safeguards against unauthorized access to your data are in place, especially given the increasing amounts of personal information government agencies are able to collect.

The ACLU filed a brief in the U.S. Supreme Court this afternoon to stop the government from invading the genetic privacy of hundreds of thousands of Americans every year. The case, Maryland v. King, involves the question of whether the police can take DNA from everybody they arrest, without a search warrant or any reason to think that the DNA sample will be helpful in solving a crime.

This morning's media event was Facebook's announcement of "Graph Search," a new tool to find content and data on Facebook that could wind up making information about you far easier your friends or just about anyone else to find. Graph Search allows you to search Facebook for specific people, places, or content – for example, "friend of friends who live in New York and like sushi" or "restaurants liked by friends who also like Taco Bell" – using a brand-new interface.

In response to an ACLU of Northern California Public Records Act request, the California Emergency Management Agency, the state entity that administers federal homeland security grant funds, recently confirmed that the Alameda County Sheriff's Office is the only agency in the entire state of California to have applied for or obtained grant funding from Cal-EMA for a drone.

In a disturbing trend that can have a chilling effect on free speech, law enforcement agencies around the country are seeking wide-ranging information about the social networking activity of political activists.