black+tuseday

 In September 1929, the Dow Jones Industrial Average peaked at 381 points, and then fell. The market fell consistently from September to October. As quickly as investors rushed into the market, they worried and got out. The first day of panic was Oct. 24, known as "Black Thursday," as 12.9 million shares of stock were traded http://www.findingdulcinea.com/news/on-this-day/September-October-08/On-this-Day---Black-Tuesday--Stock-Market-Crash-Ushers-in-Great-Depression.html