FWIW, this loon started the Toronto, Canada branch of BLM. Obama and CHILLary thought they could rally black voters to CHILLary by fostering and ring-kissing BLM. It's hard to discern what factors had what effects, but at "best" (from CHILLary's POV) I think BLM's effect on black voters was neutral. OTOH, I think Obama's and CHILLary's fostering the lies and violence of BLM was one of 101 * significant factors that gave us President Trump.
* Metaphorically. I do not think any single group or factor can be given credit for electing President Trump. CHILLary's Presidential aspirations died a death of a thousand cuts.