Whenever I mention VSD to someone outside the martial arts or law enforcement/military, I get looked at like I have grown a second head.
It would seem that many people do not consider diplomacy and other VSD techniques as "self-defense." They seem to presuppose that self defense means physically fighting, in my experience.
Back when I was a kid (in the Jurassic period), people talked about boxing as "the manly art of self defense." People didn't practice martial arts then, they learned to fight. They didn't practice VSD, they "talked their way out of a tight spot."
Prior to the early 60's, when the MA were first making their big entrance into the public eye (even though the military had been teaching some MA prior to that) via movies and a select TV show or two, VSD is essentially unknown to the public at large.
Perhaps it is the presupposition that self defense HAS to involve fighting that we need to overcome.
Lee Darrow, C.Ht.