The barricades are up, the traffic is being re-directed, and police have riot gear ready if they need it, all of which means the Twin Cities feel prepared for the protests at an animal genetics conference starting this weekend. The long list of precautions taken near a downtown Minneapolis hotel stems from the expectation that critics of biotechnology will demonstrate outside the meeting of the International Society of Animal Genetics. Minnesota Public Radio's William Wilcoxen reports on the differing views of genetic engineering that have converged in Minneapolis.