Sandy Hook massacre

John Penny writes: Re. "Rundle: Sandy Hook massacre pivot point in wretched gun debate" (yesterday). Another tragic school shooting in the United States, yet one can expect that little of substance may be done to deal with the gun addiction that underlies such tragedies. After what often seems just a ritualistic period of mourning, any serious attempt to deal with the problem will meet with ferocious claims of a constitutional right to own guns.