Another thing I found interesting about Justice Alito’s point about the impracticality of widespread human tracking and new threats posed by technological tracking is that they parallel pretty precisely the rise of eavesdropping technologies in the twentieth century. Absent the recruitment of large numbers of informants—such as we saw in the German Democratic Republic and other Soviet Bloc countries—the practical challenges of conducting human eavesdropping on person-to-person conversations limits the threat of broad and indiscriminate surveillance. By the middle of the 20th century, the telephone had become a ubiquitous feature of life in the United States. At the same time, wiretapping technologies allowed for the widespread interception and recording of telephone conversations. So, while the Supreme Court could afford to grant executive agents unfettered discretion to deploy and use wiretaps in 1928, which it did in a case called Olmstead v. United States, we were facing the possibility of a “surveillance state” facilitated by wiretaps and other eavesdropping technologies when the Supreme Court decided Katz v. United States in 1967. In that case, the Court shifted the focus of the Fourth Amendment toward privacy by adopting a new definition of search based on reasonable expectations of privacy, threatening to regulate wiretaps. Congress got there first, adopting the Wiretap Act in 1968, which sets limits on the use of wiretapping technology that is probably more robust than the Fourth Amendment requires.
So, Justice Alito’s observation about tracking is true, but he is wrong to the extent he suggests sighing abdication to the inevitable. Our history points us in a different direction. One of the critical contributions of my book is to emphasize the importance of focusing on technologies and the collective rights of the people to be secure against threats posed by the arbitrary use of searches and seizures. Those threats are particularly significant when we are dealing with technologies capable of facilitating programs of broad and indiscriminate surveillance, which is what we mean when we talk about a surveillance state. Tracking technologies certainly fall in that category. These new technologies mean that law enforcement officers no longer have to go out and follow people around. Instead, they can deploy GPS tracking devices or they can use cell site location information to monitor precisely the movements of anybody and everybody. That capacity is not exclusively a threat to privacy. It is a threat to our democratic order. So, the challenge for a constitutional court is not just to think about the preservation of privacy. Rather, the fundamental question is how to strike a balance between the freedom and liberty of the people, collectively, and the power of the government to deploy and use tracking technologies in the name of security and social control.
How do emerging social media platforms alter the protection of privacy where law enforcement does not even need modern tracking technology to get access to information on many people’s life? How can we protect the privacy against ourselves?
This is part of a very interesting public conversation about how we should think about these new spaces—Twitter, Facebook and so forth. Are they like the public square? Are they like our homes? Are they like salons, union halls, and churches—places central to civil society? Or are they—as some digital exceptionalists would have it—something completely new and unprecedented? Our answers to these questions matter a lot from a Fourth Amendment perspective. The Fourth Amendment as it was originally understood protected homes and papers because these were the social media of the age. There was a clear understanding of the linkage between security from unreasonable searches and seizures and other political rights guaranteed to “the people”—such as the right to elect legislators and the right to assemble. After all, the plaintiffs in the famous General Warrants cases—Entick, Wilkes, etc.—were pamphleteers targeted because they were publishing their criticisms of King Charles. The court struck down general warrants in those cases because they granted unfettered licenses for executive agents to search homes and seized papers, threatening “the person and property of every man in this kingdom” in a way that was “totally subversive of the liberty of the subject.” So, from the very beginning, limits on searches and seizures have been linked to the protection of civil society and political liberty. The twentieth century saw the emergence of new technologies like the telephone, radio, and television that provided us with new spaces for civil society to flourish and new opportunities for government agents to monitor activities in those spaces. Congress and the courts responded, setting limits on surveillance in some of these new spaces and granting government agents broad discretion to conduct surveillance in others. But again, I want to emphasize that these decisions were not exclusively about privacy. The more fundamental question was about where to strike the balance between liberty and security, government power and freedom, with the overall goal of preserving our constitutional order. If you make the mistake of thinking about these questions exclusively through the lens of personal privacy rather than focusing on the security and liberty of the people, then you end up with dramatic distortions. Consider, as examples, the third-party doctrine and the public observation doctrine. The third-party doctrine is grounded in the idea that it is unreasonable for individuals to maintain expectations of privacy in information disclosed to third parties. The public observation doctrine holds that it is unreasonable for individuals to maintain expectations of privacy in anything exposed to “public” view. Together, these doctrines granted government agents broad discretion to conduct all manner of intrusive surveillance, including tracking, visual monitoring, and data surveillance. The emergence of new technologies over the last fifteen years has revealed that these doctrines grant far too much power to executive agencies and raising the specter of a surveillance state. While Congress has remained largely silent, the courts have begun to respond in cases like United States v. Jones, Riley v. California, and, just last term, Carpenter v. United States. In each of these cases, the animating threat has been against the collective interests of the people.
We should be thinking about social media platforms in this same vein. Specifically, we should be asking about the role of these emerging spaces as loci for ethical self-development, civil society, and political discourse. We should be affording them the protections necessary to secure those benefits. If we think about these new spaces as centers for the exercise of our democratic rights, then granting law enforcement unfettered authority to conduct surveillance is, to borrow again from Justice Sotomayor, “inimical to a democratic society.”