NEW YORK – Investors went back to selling stocks sharply lower Friday after the Labor Department's disappointing news that hiring remains weak. Interest rates fell sharply as investors moved their money into the safety of Treasury bonds and notes. The Dow Jones industrial average dropped almost 190 points, while all the major indexes were down more than 1 percent. The government's May jobs report was an unpleasant surprise for the market. The Labor Department said private employers hired just 41,000 jobs in May, down dramatically from 218,000 in April and the lowest number since January. The news made it clear...