Just my guess...
From earlier vids, like from very early in the evening, there were quite a few citizens assembled downtown with rifles protecting businesses. They were being goaded by BLM/ANTIFA. I’m guessing something jumped off as most of the people getting shot are dressed as “protestors”, and many of the people shooting/running have rifles. This is just what I am guessing though from the videos I have seen. If that’s the case, it was bound to happen, but you know how this is going to play out in the media.
you’re right it was antifa goading the militia after their burn recepticle was extinguished...you catch a glimpse of them walking by in the street here.....throwing a pole of some sort in this clse up video
https://video.twimg.com/ext_tw_video/1298474404817408000/pu/vid/1280x720/Qks8kUDGprv_E8Rj.mp4?tag=10