Authorities in Los Angeles on Tuesday touted the results of a statewide crackdown on human trafficking, announcing the arrests of more than 600 suspects and saying more than 170 victims were rescued as part of the operation. The weeklong campaign was part of an annual effort spearheaded by the Los Angeles Regional Human Trafficking Task Force, and 80 local, state and federal law enforcement agencies looking to curb a crime that officials said targets the most vulnerable. "This is a multibillion-dollar industry," said Los Angeles County Dist. Atty. Nathan Hochman. "It is nothing less than modern slavery."