One of the most vexing questions of the twenty-first century has been how to balance increasing needs for security — terrorism, cyber crime, pandemics, school shootings — with the expectation that, in the United States, we live in an open, free, and inclusive society. As we attempt to reconcile these questions, in our government, in our neighborhoods, and in our own homes, we must face important questions about what freedom and security mean and how much of our privacy we are willing to sacrifice for each. Most broadly, then, we ask: Can we have security, freedom, and privacy? Or must we sacrifice some of one to create the other?