LOS ANGELES -- More than 40 people were arrested Thursday during supermarket rallies in support of grocery clerks idled by a four-month strike and lockout. The granddaughter of late farmworker union leader Cesar Chavez, state Assemblywoman Jackie Goldberg, D-Los Angeles, and an 86-year-old member of the Gray Panthers activist group were among those arrested during civil disobedience rallies involving clerks and about two dozen labor unions and community groups, organizers said. Some protesters linked arms and blocked the entrances at Vons and Pavilions stores. Twenty people were handcuffed and led away from the two stores in mid-city Los Angeles and...