I'm pretty leftie and I've participated in Black Lives Matter protests, and believe in that stance.
Regardless, surprising and weird to read that a knockoff event "Black Matters" was allegedly organized and run by the same Russian groups that funded alt-right troll farms, and was attended by thousands http://thehill.com/policy/technology/358025-thousands-attended-protest-organized-by-russians-on-facebook
Participants in general did not know.
A test to see which different parts of US politics Russian groups can tap into? Or? Not really sure what to make of it.