If the bastard who recently shot up a school didn’t have a gun — but was intent on committing a massacre — heĀ could have walked into that same school with a knapsack full of Molotov cocktails (bottles filled with gasoline and motor oil, with a well-taped gas-soaked rag stuffed in the opening) and done worse damage.
Remember, these nasty, but crude little things were able to stop Soviet tanks. Perhaps the left will will call for bottle, gas, motor oil, tape and rag control.
On the other hand, if honest citizens had right-to-carry permits, there would be neither gun nor Molotov cocktail massacres. In fact, there would be less crime, less need for police, less fear among law-abiding citizens, and less need for prisons.