Assault? Wasn’t that dog wagging its tail during the video?
Dogs wag their tails at the people who are abusing them as an appeasement gesture.
In dog body language, another ~dog~ would clearly see that and calm down/stop the attack.
Humans are not as bright.
The dogs was being cruelly treated.
If I did that my Dobes and they bit the hell out of me, I would have -earned- those bites fairly.