We continue our look into the 100 darkest moments in pop culture history. This week we look into the fatal accident of Dale Earnhardt, Sr. in Daytona Beach, FL at the NASCAR Daytona 500 in 2001. 17 million people witnessed the death of the most popular driver in NASCAR. Some say this crash changed NASCAR forever. The sport became much safer though the popularity plummeted. This week we look at one of the darkest moments for auto racing with the death of Dale Earnhardt, Sr.