Administrators at Des Moines Area Community College took immediate action last week when a startling message from a social networking site was discovered, the Des Moines Register reports. It said: “Who wants to shoot up the DMACC Ankeny campus the same time I shoot up the Urban campus?” Police were waiting for Paul Richard George, 18, on Friday, the moment he showed up for his second day of college at 1100 Seventh St. in Des Moines…