↑John S. Dempsey; Linda S. Forst; Steven B. Carter (January 1, 2018). An Introduction to Policing. Cengage Learning. hlm.34. ISBN978-1-337-55875-4. A pro-police movement called Blue Lives Matter was established in response to Black Lives matter and to the increasing attacks on law enforcement, which resulted in 63 officer line-of-duty deaths by gunfire in 2016.
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