TL;DR
1) Nurture -- your environment -- determines your IQ more than nature (genetics). Your parents could be the smartest people on earth but if you surround yourself with drugs, guns, and a nikka named Twofold, you're probably going to be a dumbf*ck.
2) A lot of famous research, famous books (e.g. The Bell Curve), and famous speakers on IQ were and are funded by The Pioneer Fund ... which is a white supremacy organization founded with the goal of "achieving race betterment through promoting the genes of white people". This is why the phrase "follow the money" has a lot of value.
3) IQ tests aren't the best measure of a person's intelligence. For example, if you ask an immigrant from Japan to spell something in English, he/she probably won't do as well as an immigrant from the UK. If you take the test results and claim "Asians aren't as smart as white people", then you're selling a structured lie. This wasn't talked about in the video, but intelligence comes in two flavors: fluid and crystallized. Fluid is your ability to figure out something without knowledge, whereas crystallized is your ability to solve something directly through knowledge. It's just a fancy way of saying book smart vs street smart. We all know a b*tch who can regurgitate a textbook, and we all know a b*tch who can't spell for sh*t but can handle her business correctly.
In summary, there are dumb motherf*ckers in every race. Never forget this. You will meet a person who can solve some incredible sh*t and you will meet a person who can't. There's value in both, and if you understand this, then you won't worry about a person's IQ as much as Nazi's and Nazi sympathizers did and do.