It was also centuries of systemic racism that have festered in U.S. society and institutions, including our overly punitive, adversarial system of policing. Body cameras have made the problem of police brutality against minority communities harder to ignore but have not reined it in. Fewer than 1 percent of the thousands of calls CAHOOTS responded to last year necessitated police backup, the group reports. A necessary step will be to address the militarization of policing. But accountability also depends on police departments making data on killings, use of force, disciplinary records, budget allocations and other areas publicly available.