If you've got some time, this guy has some of the most incredible raw footage of the riots I've found. However, there's like 40 hours of video, and there's a lot to take in. If you feel like it, watch a bit & if you find anything, link w/ a timestamp plz.
This is where I found the Water Protector film, the brick squad film, and lot of other evidence of pre-planned actions and agent provocateurs. If you do watch, I highly recommend you watch in half speed when things are really getting hectic. Gives you more time to take it all in.
And if you do watch, look for patterns in clothing colors. A lot of groups are wearing purple or hot pink as an identifier. In one I noticed lime green. Just a tip. :)
Like at 0:56 in that video, this guy turns and has his hand to his face. Is he adjusting his mask? Is it a walkie talkie? Hard to say, but there's SO much of this kind of stuff, especially at the beginning of all this when they weren't as careful about not getting caught.