Are there any court documents here showing what happened before the video? Last time I was at a traffic stop, the cop didn't tase me. How did it come to that i

Are there any court documents here showing what happened before the video? Last time I was at a traffic stop, the cop didn't tase me. How did it come to that in this situation? Edit: I just got to that point in the video. While I don't support tasing people for things as light as this, I do have to say that I personally don't think it's a good idea to this adversarial to anyone.