STOCKEXCHANGE-B-19OCT87-MN-SR – Pacific Stock Exchange on “Black Monday”, the day the Stock Market fell 509 points in one day. William Ferrell bows his head as the the Stock Market continues to fall. Photo by Steve Ringman ;Ran on: 02-27-2005 ;&quo;Black Monday,&quo; 1987: Scene at the Pacific Stock Exchange Oct. 19, the day the Dow lost 509 points. (Photo by Steve Ringman/San Francisco Chronicle via Getty Images)