What has happened, can't really explain either.But this seems to me standard Marxism and old time left political actions, running rampant. In short, one conclusion could be that it is better to be red than expert, which is one way of looking at it.
Better to have diversity than ... um ... you know.
I think they just want a hand out or power, and not too sure if they are actually concerned about anything.
Anyways, here is an example, where it really was a self-criticism session, PRC style.
https://www.thestar.com/news/gta/2016/07/14/tory-and-wynne-to-meet-with-black-lives-matter.html
I read the article, but only two days later, was able realize ... hey, wait a minute, didn't something like this happened somewhere else before ... lol ...