The financial markets around the world took more hits Thursday. The S&P 500 was down 7%, as of 10:15 a.m. after trading was temporarily halted following a steep drop in the first few minutes of trading. The index is set to join the Dow in entering a bear market after losing more than 20% from its record set last month, and one of the greatest eras in Wall Street’s history is crumbling. The Dow was off about 1,800 points, or close to 8%.