2nd Amendment - I'm Sure This is What They Wanted

The current reading of the 2nd Amendment gives every American the right (in all caps.. THE RIGHT) to commit suicide and also take out any number of other people. Current "tools" make it possible to wipe out a large number of people in a short time, and Americans are allowed to choose who else is going to die. Nuns, school kids, babies, Christmas shoppers, postal employees, soldiers, movie goers, McDonald's customers, family members; it doesn't matter; the Constitution says it's OK to shoot them all. And I'm sure that we can all agree that the Framers had this in mind when they adopted the Bill of Rights. Franklin, Jefferson, and Madison envisioned these events, like those at Sandy Hook Elementary, would be good for the country and set in stone our RIGHT to mass murder (as long as you then commit suicide).

Is this quote from the Constitutional Convention accurate?  Mr. Franklin said, "Mass murder is not all bad. Y'all could even say it would be a good thing, put it in an Amendment."