RICHMOND, VA, May 29 -- Militant and at times violent protests have erupted across the United States over the incredibly depraved, racist and brutal murder of George Floyd, a 46-year-old African-American security officer, by a white policeman in Minneapolis, Minn. Fueling the anger are the Feb. 23 murder near Brunswick, Ga., of 25-year-old Ahmaud Arbery by two white men while he was jogging through “their” neighborhood, and the March 13 fatal police shooting in Louisville, Ky., of Breonna Taylor, a 26-year-old emergency medical technician, killed when officers broke into her apartment under a “no-knock” warrant, without announcing themselves as police. George Floyd was arrested May 25 on suspicion of trying to pass a counterfeit $20 bill, a minor, nonviolent crime. When he allegedly resisted arrest, Office Derek Chauvin, one of four officers on the scene, placed his knee on the prone, handcuffed man’s neck and, according to a probable cause affidavit released today, left it there for m...