Even then why the fuck would you tase him?

IIRC the thought the seizure induced thrashing was him resisting arrest. Of course that begs the question, why were they trying to arrest someone having a seizure (that they'd been sent to help BTW) in the first place?

He was seizing right at them and they were afraid for their lives, they really had no other choice! Also, he didn't stop when they told him to, which is an egregious crime in the US it seems - when a cop tells you to do something you do it, or risk getting tazed and/or shot, even if the order is to turn green, fly, crawl with your arms in the air or stop having a grand mal seizure...

Cops in a town arrested a woman for drinking at home because she was rude to them when they asked her about a unrelated hit and run that happened in front of her home.

She was watching a baseball game minding her own business and they left, then came back and arrested her.

Oh! I actually know the answer to this one!

Cuz the perpetrator was experiencing excited delirium which, to the untrained eye (and the trained eye and the doctor's eye and any eye that doesn't belong to a police officer), can LOOK like a seizure. According to numerous completely un-ridiculous lawsuits, the lawyers and doctors paid ~~off~~ by Axon have determined that repeatedly applying the electric shocks of a taser actually CURE excited delirium!

So, the fact that this man survived PROVES that the ~~assaulting~~ responding officer actually saved his life from an episode of excited delirium! Had the man died, it would have meant that the officer did everything within his ~~incompetence~~ power to rescue the man, but he simply succumbed to the grip of excited delirium. Also, had the man weighed the same as a duck, they would have had to burn him.

THIS OFFICER IS A ~~MORON~~ HERO!!!

In case I was too subtle:

/s

maybe when they heard that he was going through a seizure, they assumed he was orchestrating a drugs bust.