With mass shootings all too common, it appears that no place in the United States is safe from carnage - not churches, not schools, not even the morning newscast.

The shocking on-air murder of a 24-year-old reporter and a 27-year-old cameraman by a disgruntled former colleague on Wednesday has once again renewed calls for stricter gun controls.

That is simply not going to happen, experts said, and the trend in recent years has actually gone in the opposite direction.