Maybe we can discuss the video in the opening post now.
It's a dangerous one, I think, because it deals in half-truths. I don't know the background of the girl in the video, but she makes a lot of points that have been discussed at some length on sciforums in the past. I also don't know what she used as a source, but her talking points sound like ones that white supremacists often use, and have tried to put as valid arguments here from time to time.
There are a number of video responses to her video on youtube, though I've only watched fragments of them so far. I'd recommend that anybody viewing this video also consult one or more of the response videos to get another side to this story.
I don't want to get into debunking each point she makes one by one. It would take too much time and effort. But one thing to note is that each time she posits an explanation for the "raw data" she presents, it is simplistic and it ignores many important confounding factors. And therein lies the danger. None of her "statistics" speaks for itself. All require interpretation and analysis of causal factors, even where the statistics are accurate. But mixed in there also are mistakes and what can only be deliberate distortions or ignorances.
To be charitable, maybe she made a video on a topic that she has no real understanding about, and it just ended up reflecting her own unconscious (?) racist prejudices. Maybe she consulted the wrong sources, and just happened to source stuff from far right sites. Or, less charitably, maybe she has white supremacist sympathies herself. As I say, I don't know her background or what she usually puts out there, so can't say whether this is part of a pattern or an abberration.
The video is dangerous though, because a person watching it uncritically might well come away with the impression that she has made a good argument for "black people" being more violent and less intelligent that "white people".
The far right persistently deals in falsehoods that can be attractive for their apparent simplicity. But underneath that, there's a layer of duplicity. They tell only a fraction of the full story, and all of the missing evidence and explanation skews the entire argument in only one direction - that of trying to make racism sound respectable and reasonable. It's insidious.