SAO PAULO, Brazil - One of Brazil's most notorious gangs staged dozens of attacks on police before dawn Saturday, setting off gunbattles in three cities that killed at least 30 people, officials said. Twenty-four prison uprisings also were reported across Sao Paulo state. It was the worst assault on authority since gangsters armed with machine guns, bombs and other weapons attacked police stations in Sao Paulo city over a 10-day stretch of November 2003. That spree also was blamed on the gang First Capital Command, which is known by its Portuguese initials, PCC. The attacks that began late Friday "were...