The Honorable Justice Joseph Story, in his Commentaries on the Constitution identified the risk presented to the 2nd Amendment in the earliest days of the Republic.
"There is certainly no small danger, that indifference may lead to disgust, and disgust to contempt; and thus gradually undermine all the protection intended by this clause of our national bill of rights"
The above is one reason I repeatedly press my elected Representatives to require the firearms safety training, and marksmanship training to a demonstrated standard equivalent to the U.S. Military's requirements at the Middle School and High School levels as a condition of an educational institution receiving ANY Federal tax monies for ANY program. It is why I also advocate for essentially all graduates to be able to pass the U.S. citizenship test, to receive ANY Federal tax monies for ANY program.
My solution for the Leftist parents is simple. If little Johnny or Suzie is an "objector" and can't be trained. They get drafted first in a call up...