Does military equipment lead police officers to be more violent? We did the research. -- Even controlling for other possible factors in police violence, more-militarized law enforcement agencies were associated with more civilians killed each year by police.

https://www.washingtonpost.com/news/monkey-cage/wp/2017/06/30/does-military-equipment-lead-police-officers-to-be-more-violent-we-did-the-research/