Flowers with a card reading "R.I.P. Bro" is seen near to where the murder of 14-year-old Jayden Moody took place, on Jan. 09, 2019, in London, England. Leon Neal/Getty Images
LONDON—I try to tell Britons that it’s possible to attend a doubleheader at a packed U.S. baseball stadium in hot weather and come away without a scratch. Likewise, it is possible to attend a capacity-crowd American football game without witnessing or experiencing violence.
