The Missouri legislature has overturned the veto of their new concealed carry regulations. The new regulations allow unpermitted concealed carry, and alter some of the permitting processes for buying handguns. They also introduce a new stand your ground law.
Predictably, the New York Times has denounced Missouri's laws, in effect offering a call for more federal legislation (after all, state government can't be trusted! Fortunately the federal government can!) and offering another endorsement to Hillary Clinton. Well, it's the New York Times. What do you expect?
The thing that bothers me about the media coverage isn't the strong negativity. I would expect nothing else. It's the fear mongering.
The always-worth-listening-to Massad Ayoob explains stand your ground laws: