Those videos are terrible and the very thought of any animal being treated that way makes me cringe. My DW and I would even go so far as saving bees from the pool. Not just honey bees but even the wasp and such.
Knocking on my noggin here, but so far no deer. Last year during my annual daylily shopping spree with my mother, I saw just how destructive those pesky whitetail can be to a garden. They had taken all the buds from a 100' x 6' row of daylily's. And, while we were walking around in the garden drooling over some of the blooms they had yet to eat, one snorted. it seems we had interrupted its lunch plans...
Good luck with your deterrent of those hungry critters...