I read about this earlier this morning on another site, but hadn't seen the video. It's disturbing knowing those are his last moments. If the bag was small enough to swallow he probably would have just gotten a fine and a slap on the wrist. So not worth your life
On the taser it's hard to make a call on that w/o knowing what is being said. If he's struggling and trying to tell them he is choking when he's on the ground before being tased, which I think may be the case, then there should be some diciplinary action taken. If that isn't what's being communicated though, you kind of have to expect getting shocked. I mean, they tase little kids down here for less than that.