First Ann Coulter sought to legitimize the National Rifle Association’s existence by saying it fought against the Ku Klux Klan, and now she’s saying that had someone at Sandy Hook Elementary School had a concealed weapon Adam Lanza would not have been able to murder 20 children and six adults.
Luckily, some years ago, two famed economists, William Landes at the University of Chicago and John Lott at Yale, conducted a massive study of multiple victim public shootings in the United States between 1977 and 1995 to see how various legal changes affected their frequency and death toll.
Landes and Lott examined many of the very policies being proposed right now in response to the Connecticut massacre: waiting periods and background checks for guns, the death penalty and increased penalties for committing a crime with a gun.
None of these policies had any effect on the frequency of, or carnage from, multiple-victim shootings. (I note that they did not look at reforming our lax mental health laws, presumably because the ACLU is working to keep dangerous nuts on the street in all 50 states.)
Only one public policy has ever been shown to reduce the death rate from such crimes: concealed-carry laws. Source