Melinda Olson has given her 12-year-old son raw milk for years. When he walked away virtually unscathed from a serious bike accident last year, she credited his healthy diet of raw milkdairy products.Matthew Caldwell fed his 2-year-old son, Owen, raw milk in the spring of 2010. The boy was hospitalized for 13 days, victim of an E. coli 0157:H7 outbreak traced to raw milk producer Mike Hartmann.The two parents' stories are bookends to a debate that is on high boil in Minnesota. One farmer accused of breaking state law barring the off-farm sale of raw milk, Alvin Schlangen, is slated for trial in July. Hartmann was hit with the same criminal milk charge last month, and also faces a civil suit from Caldwell.Raw milk isn't pasteurized -- heat-treated to kill pathogens. Advocates see it as integral to a superior diet, and decry what they see as heavy-handed attempts to limit its free flow and punish suppliers. "This is about the freedom to choose the foods we want for our families," said Olson of Richfield.