Heather Mac Donald talks about the "War on Cops" in the video below, based on a book she wrote - The War on Cops by Heather Mac Donald. 
Good info in this video, lots of stuff the front line officers who work the street every single day know already, but good to share with those who are not knowledgeable or get their info from CNN or the like. I will say that 95% of everything she says is accurate based on my experience. Watch this, share this with people who are pro-BLM or left leaning.