More than 300 workers, many of them Hispanic, walked out of a Smithfield Foods Inc. (SFD) North Carolina hog slaughtering plant Thursday, protesting a labor screening process and what they described as management intimidation and abuse. "There's a long train of abuses in that plant really going back more than a dozen years," Gene Bruskin, a representative of the United Food and Commercial Workers Union who serves as the Smithfield campaign director, told The Associated Press. "Recently the activity in the plant has been increasing." Bruskin said Smithfield officials have failed to address problems of sexual harassment, inappropriate firings and...