Black Friday is the day after Thanksgiving. It’s traditionally the busiest shopping day of the year because it kicks off the holiday season. This season is crucial for the economy because around 30% of annual retail sales occur between Black Friday and Christmas. It was originally called Black Friday because so many people went out to shop which caused traffic accidents and sometimes even violence. The origin of the name was when the Philadelphia Police Department used this phrase to describe the mess appears from overcrowding. No wonder retailers wanted to make the name “Black Friday” mean something positive. To them, the Friday after Thanksgiving was one of the most profitable days of the year. To compensate, they decided to follow the adage, “If you can’t beat ’em, join them.” Retailers changed the name to reflect their success. Accountants use black to signify profit when recording entries. They use red to indicate loss. So, Black Friday means profitable Friday to retailing and to the economy.