WICHITA, Kan. — A University of Kansas journalism professor was placed on indefinite administrative leave Friday for a tweet he wrote about the Navy Yard shootings which said, “blood is on the hands of the #NRA. Next time, let it be YOUR sons and daughters.” David W. Guth, an associate professor of journalism, made the comment on Twitter after Monday’s shootings in Washington, D.C., in which 13 people died, including the gunman. The tweet didn’t attract much attention until Campus Reform.org posted a story Thursday, sparking a social media backlash that’s spilled over into some state lawmakers calling for his...