Brazil reviews Olympic torch security after riot

Rio's top security official vowed Thursday to review security for the Olympic torch after rioting protesters blocked the relay ceremony and apparently extinguished the flame. The violent clashes late Wednesday in Angra dos Reis, a coastal resort south of Rio, cast a shadow over final preparations for South America's first Olympics, which start August 5. In another worry for organizers, Rio metro employees threatened Thursday to go on strike on the eve of the Games if they do not get a 9.83 perce