Opponents of so-called "factory farms" rallied at the state capital, calling for a two year moratorium on the expansion of large feedlots. They say new, concentrated livestock operations are polluting Minnesota's air and water, and squeezing out family-sized livestock farms. Minnesota Public Radio's Mary Losure reports. Wearing "Stop Factory Farms" buttons and carrying signs with slogans like) "land of ten thousand hog lagoons" signs, the crowd of 150 voiced its support for the feedlot moratorium. Monica Cahout farms in Renville County, where some of t