As Violence Soars, Mexico Seeks to Retool Justice System. Again.

MEXICO CITY -- The raid delivered a resounding blow to Mexico City's most fearsome criminal group: 31 suspected gang members were arrested, two drug labs were uncovered and a criminal bounty was seized, including 2 1/2 tons of marijuana, 44 pounds of cocaine and an arsenal of weapons.Within a few days, however, the case had collapsed. A judge, finding inconsistencies in the prosecution's files, freed nearly all of the suspects. And a major victory for the government turned into a major embarrass