Chris Matthews gave no sign that he knew that the killer in Florida was told by the police not to interfere. He had to be told so by his guest. And then he acted as though this was not an open and shut case. Perhaps there are extenuating circumstances, but his entire treatment of this today was lackadaisical journalism to put it mildly.
That and his shameless promotion of his JFK book are a sign of something, but I do not have a name for it just now.