Huge ‘8647’ etched into grass on the National Mall, aerial images show CTV NewsPolice investigate ‘8647’ written in grass on US national mall BBCGrass on the National Mall Is Vandalized With ‘86 47’ Stains The New York TimesMarkings that appear to show the numbers “86 47” seen on National Mall in Washington CBS NewsUS authorities investigate huge ‘8647’ marking on grounds of National Mall in Washington Reuters
