A thug gratuitously tased Bryce Masters 5 times in a row, causing him a heart attack (not usual at age 18) which led to permanent brain damage. To make things worse, the thug then dropped him on his face, breaking lots of his teeth.

Afterwards he falsified records to create an excuse.

That thug was sentenced to 4 years in prison, but many others get away with it.

But there is another factor: thugs have been taught that tasers are so safe that they don't need to hesitate before using them.