The term Black Friday was first coined in 1869 to describe the collapse of the U.S. gold market brought about by two gold speculating conspirators, but it was not used in connection with the day after Thanksgiving until the 1960s. Philadelphia police officers applied the term then because mobs of suburbanites would flock to the city to shop in advance of the Army-Navy football game held on the Saturday after Thanksgiving, giving way to traffic jams, crowded stores, and general headache....