Last week, a federal court ruling struck a blow against censorship directed at marijuana policy reform advocates at Iowa State University. The case, brought by two students with the university's chapter of the National Organization for the Reform of Marijuana Laws (NORML) and the Foundation for Individual Rights in Education (FIRE), was heralded as a major victory by the plaintiffs. ...the U.S. District Court for the Southern District of Iowa issued a permanent injunction barring Iowa State University…