A Texas school district drew a rebuke from the nation's largest police union after a junior high school teacher distributed an assignment that likens police to slave owners and Ku Klux Klan members. The unauthorized assignment featured a five-panel cartoon of a slave ship officer and others with a knee on a black man's neck. It culminated with a modern-day police officer with a knee on a suspect's neck, the Washington Examiner reported. The victims, echoing the words of George Floyd, say, "I can’t breathe." David Vinson, the superintendent of the Wylie Independent School District, northeast of Dallas, apologized after...