"The claim that gun massacres are mysterious or
difficult or bewildering or resistant to legislation is a lie."
— Adam Gropnik, "Four Truths About the Florida School Shooting,"
The New Yorker 15 Feb. 2018
"In our time, political speech and writing are largely
the defense of the indefensible.
Things like the continuance of British rule in India,
the Russian purges and deportations,
the dropping of the atom bombs on Japan,
can indeed be defended, but only by arguments
which are too brutal for most people to face,
and which do not square with
the professed aims of the political parties."
— George Orwell,
"Politics and the English Language" (1946).
Allowing gun massacres can be defended — e.g., if one argues as allowed by the New Yorker essay that the economic and cultural advantages of widespread ownership of a variety of guns justifies the loss of life. Alternatively, people have argued that the 2nd Amendment in the Bill of Rights undergirds all our other rights by helping guarantee The Right of Revolution, the final bastion against tyranny and oppression by the Federal government (and State and local governments as well). Thomas Jefferson said "The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants. It is its natural manure" (1787), to which, in this argument, we would add the blood of a few thousand innocent Americans a year.
So of course the NRA should be defending sale of Kevlar-piercing bullets: the police and military personnel defending the State might well be wearing Kevlar armor. And of course US citizens should have semi-automatic weapons — and some access to kits to make them full(y) automatic — with large magazines: to counter those of the SWAT teams and military. Etc. Q.E.D.
Like, if you want a coherent and rational argument, go to the greed-heads of the weapons biz (or the crazies arming for the coming race war or apocalypse) or those who fear the black helicopters coming in from the Deep State. They'll be bringing AR-15s to a drone fight: the State always outguns the People. The turning point of revolutions is when the troops turn their guns away from the People and toward an oppressive government.
On the other hand, "Post-Truth is pre-Fascist," and in a Post-Truth USA, there is much to be said for recalling the Right of (Mostly NonViolent) Revolution.