In the wake of the police shooting of Michael Brown in August 2014, as well as the subsequent protests in Ferguson, Missouri and around the country, there has been a call to mandate the use of body-worn cameras to promote accountability and transparency in police-civilian interactions.

The Data & Civil Rights initiative has published a new working paper by Alexandra Mateescu, Alex Rosenblat, and danah boyd (with an assist from Jenna Leventoff and David Robinson from Robinson & Yu):

Police Body-Worn Cameras breaks down what’s known – and not known – about the promises, perils, and potential best practices around police body-worn cameras.

Both law enforcement and civil rights advocates are excited by the potential of body-worn cameras to improve community policing and safety, but there is no empirical research to conclusively suggest that these will reduce the deaths of black male civilians in encounters with police. There are some documented milder benefits evident from small pilot studies, such as more polite interactions between police and civilians when both parties are aware they are being recorded, and decreased fraudulent complaints made against officers.

Many uncertainties about best practices of body-worn camera adoption and use remain, including when the cameras should record, what should be stored and retained, who should have access to the footage, and what policies should determine the release of footage to the public.

As pilot and permanent body-worn camera programs are implemented, it is important to ask questions about how they can be best used to achieve their touted goals. How will the implementation of these programs be assessed for their efficacy in achieving accountability goals? What are the best policies to have in place to support those goals?