It is about land/ mineral/ oil/ gas/ solar/ wind rights. it has nothing to do with the Desert Tortoise.
If you watch closely, you can see that at 1:34
the police dog lunges first. Cliven's son was protecting himself FROM a lunging dog, which in my book is a weapon, as they are trained as weapons, before he was tased. Luckily, the video shows the entirety of the confrontation, not just when he started to kick to keep the dog off him. funny how media never says anything about how the dog lunged at him first.