Yes, Baltimore City conducted an extensive aerial surveillance program over residents’ homes without their knowledge or consent, and it took a federal court to stop it. Between 2016 and 2020, the Baltimore Police Department deployed sophisticated wide-area persistent surveillance technology that could photograph 32 square miles of the city per second from aircraft circling overhead for 12 hours at a time. Residents learned about this program only when news outlets reported it, not through any official notification from the city.
A landmark civil rights lawsuit filed by community activists and the American Civil Liberties Union (ACLU) successfully challenged the program as unconstitutional, leading to a 2022 settlement that permanently prohibits the Baltimore Police Department from operating similar surveillance systems in the future. This article explains what the Baltimore surveillance program was, why the city’s failure to disclose it mattered legally, how courts ruled on the case, and what the settlement means for residents’ privacy rights. Unlike many class action settlements where residents can file claims for direct compensation, this case resulted in legal and policy reforms that benefit the broader Baltimore community by restricting future surveillance activities.
Table of Contents
- What Was the Baltimore Aerial Surveillance Program?
- Why Did the City’s Failure to Notify Residents Matter?
- The Legal Challenge and Court Ruling
- What Does the 2022 Settlement Provide?
- Broader Privacy Implications and What This Reveals About Surveillance Technology
- What Happened to the Data That Was Collected?
- What This Case Means for Future Police Surveillance Technology
What Was the Baltimore Aerial Surveillance Program?
The Baltimore Police Department’s secret surveillance operation was formally called the Aerial Investigation Research (AIR) program, a public-private partnership with a company called Persistent Surveillance Systems. The technology was a persistent camera system mounted on aircraft that could continuously photograph a massive area of the city—32 square miles per second—capturing detailed images of streets, homes, and movements throughout the day. The program operated for 12 hours daily during a pilot phase in 2020, though it had been secretly tested in 2016 without any public knowledge or city council oversight.
This wasn’t typical police surveillance where officers follow a specific suspect. Instead, the AIR program created a permanent “eyes in the sky” recording the movements of hundreds of thousands of residents going about their daily lives—walking to work, visiting homes, attending religious services, or receiving medical care. The technology was precise enough to track individual vehicles and pedestrians through the city, creating a detailed record of residents’ movements and associations. The stated purpose was to help solve murders and shootings, but the program operated with zero transparency about what data was being collected, who had access to it, or how it would be used.
Why Did the City’s Failure to Notify Residents Matter?
The Baltimore Police Department’s decision not to inform residents or even most city officials about the surveillance program was central to the lawsuit and the court’s constitutional concerns. When the 2016 trial began, neither residents nor top city leadership—including some city council members—knew the surveillance was happening. The program only became public because journalists discovered and reported it. This lack of transparency violated fundamental principles of informed consent and democratic accountability.
People have a constitutional right to know when they are under surveillance by government agencies, particularly surveillance of this scope and intrusiveness. The failure to notify residents meant they had no opportunity to debate whether this surveillance was appropriate, to demand oversight mechanisms, or to voice concerns about privacy violations. In contrast, when public surveillance initiatives are properly disclosed—through city council approval, public hearings, or official announcements—residents and their representatives can make informed decisions about whether the benefits justify the intrusion. The ACLU’s lawsuit emphasized that secret government surveillance in a democracy contradicts basic principles of consent and oversight. Had Baltimore disclosed the program, residents might still have opposed it, but at least they would have had a choice in the matter.
The Legal Challenge and Court Ruling
The lawsuit challenging the AIR program was filed in 2020 by leaders of the activist group “Leaders of a Beautiful Struggle,” including Erricka Bridgeford (co-founder of Baltimore Ceasefire 365) and organizer Kevin James, supported by the American Civil Liberties Union and ACLU of Maryland. They argued that the warrantless, continuous surveillance of an entire city violated residents’ Fourth Amendment rights to privacy and protection against unreasonable searches. The case made its way to the Fourth Circuit Court of Appeals, which issued a landmark ruling in 2021 declaring the Baltimore aerial surveillance program unconstitutional.
The court’s decision was significant because it recognized that mass surveillance from the sky—without individualized suspicion or warrants for specific people—violates constitutional protections. The Fourth Circuit found that residents had a reasonable expectation of privacy in their movements and associations, and that the government cannot conduct continuous surveillance of an entire city just because it might help solve crimes. This ruling set a legal precedent affecting not only Baltimore but potentially other cities and police departments considering similar surveillance technologies.
What Does the 2022 Settlement Provide?
The settlement reached in 2022 between the plaintiffs and Baltimore City Police Department included several important restrictions. Baltimore agreed to pay $99,000 in attorney’s fees to the legal teams that fought the case. More significantly, the city committed to permanently blocking the deployment of any similar aerial surveillance program in the future. The Baltimore Police Department is prohibited from accessing the previously collected surveillance data, with the limited exception of information that may be needed for ongoing criminal prosecutions or as part of discovery in existing legal cases.
Critically, the settlement requires that all surveillance records collected during the AIR program be expunged and destroyed. This means the thousands of hours of footage documenting residents’ movements and associations cannot be retained, searched, or repurposed. The settlement creates a legal wall preventing Baltimore from simply storing the data in case it might be useful later. While the settlement does not provide direct financial compensation to affected residents (unlike class action settlements where individuals can file claims for damages), it achieves the core goal of preventing future surveillance abuses. The legal victory and policy restrictions represent a significant win for privacy rights and democratic oversight of police technology.
Broader Privacy Implications and What This Reveals About Surveillance Technology
The Baltimore case illustrates how surveillance technologies can expand far beyond their stated purposes when deployed without public oversight. Police departments and government agencies often justify surveillance tools by pointing to specific investigative needs—solving murders, finding suspects—but once the technology is in place, the temptation to use it broadly or even for mission creep becomes difficult to resist. The AIR program was presented as a tool to solve homicides, yet it functioned as mass surveillance of everyone in a 32-square-mile area regardless of whether they were suspects, witnesses, or completely uninvolved. A critical limitation of the Baltimore settlement is that it applies only to Baltimore City Police.
The technology itself still exists and is marketed to other police departments across the country. Some cities have adopted or tested similar aerial surveillance systems. The ruling from the Fourth Circuit Court of Appeals carries weight in that region but doesn’t automatically prevent other police departments in other jurisdictions from pursuing the same technology. Residents in other cities who discover similar programs would need to mount their own legal challenges. Additionally, the settlement addresses this specific surveillance system but does not comprehensively regulate all forms of police surveillance technology—drones, traffic cameras, facial recognition, and other tools remain subject to varying levels of oversight depending on local laws.
What Happened to the Data That Was Collected?
Before the settlement, Baltimore had collected months of surveillance footage showing the movements of residents throughout the city. Under the 2022 agreement, the Baltimore Police Department must destroy all of this collected data. The expungement requirement is important because it prevents the city from claiming the data is useful for cold cases or future investigations, which is a common argument agencies make to retain surveillance records.
However, there’s an important exception built into the settlement: law enforcement can still use previously collected data in connection with existing criminal prosecutions or as part of discovery obligations in ongoing legal cases. This means if someone was arrested before the settlement and the prosecution team believes surveillance footage is relevant to the case, that footage could potentially be used in court. The exception is carefully limited to existing matters, not future investigations, preventing the data from becoming a general investigative tool going forward. Once those specific cases are resolved, the remaining footage must be destroyed.
What This Case Means for Future Police Surveillance Technology
The Baltimore ruling represents a significant legal pushback against unlimited surveillance technology in law enforcement. Courts are increasingly recognizing that mass surveillance—where everyone is monitored without individualization or suspicion—raises constitutional concerns even if the surveillance is conducted by government agencies with good intentions. The case demonstrates that residents and civil rights advocates have legal tools to challenge surveillance programs, even after they’re deployed. However, the broader landscape of police surveillance continues to evolve.
New technologies emerge constantly—facial recognition, license plate readers, drone surveillance, cell-site simulators—and different jurisdictions have different legal standards for their use. The Baltimore settlement is a victory for privacy rights but is not a universal prohibition on all aerial surveillance. The case does establish an important precedent: law enforcement cannot conduct secret, city-wide surveillance of entire populations without warrants, court oversight, and public notification. Communities concerned about surveillance in their own cities can point to the Baltimore ruling as evidence that such practices are constitutionally problematic, even if they would need to mount their own legal challenges if similar programs are discovered locally.