Farmworkers, students and activists march to the corporate offices of Taco Bell in Irvine, Calif., on March 11, 2002, calling attention to the working conditions of Florida farm laborers who harvest tomatoes for the fast-food chain.

402159 02: Farmworkers, students, and activists march to the corporate offices of Taco Bell March 11, 2002 in Irvine, CA, calling attention to the working conditions of Florida farm laborers who harvest tomatoes for the fast Mexican food chain. The protesters are calling for a boycott to help pressure Foridas growers to improve the pay and conditions of workers, who they say earn about $7,500 a year. (Photo by David McNew/Getty Images)