"run in the back of the kid's mind".    You hope.

I think you may be engaging in fond self-delusion (not for the first time).

Kids have no idea who Charlton Heston is and never did think Hee-Haw was cool.   The few kids who actually handle firearms and also see this video will think:    "What a bunch of idiots.   This is nothing like the way me and Dad handle guns."

This video is likely to accomplish precisely nothing except make a few liberals feel good about themselves (certainly a desperate need) ---which you would realize if you were able to see it through objective eyes.