Other posts indicated he was a wealthy man who had paid to be on the force as an auxiliary. He might not have been up to snuff on his weaponry reflexes (”This is your Tazer, this is your gun.”). Bad shoot, from what I’ve read—he was trying to zap a suspect already on the ground. Even if he was struggling, there should have been enough time to look at what was in his hand before pulling the trigger.
My understanding is that it is almost impossible to mix up the two.
The blacks on Twitter were calling it Safari Hunting.