Black Tuesday, which occurred on October 29, 1929, is considered by many to be the day that started the Great Depression. On this day the Dow Jones fell by twelve percent after millions of shares were sold off. After this moment stock values began to progressively fall for months on end. Consumer panic following declines in the market prior to Black Tuesday is seen as the cause of this event. It helped lead many banks to fail during this time as well as many bankruptcies, thus helping to cause the Great Depression.