This is taken from a public access show, and there’s a kind of outraged young man introducing the clips. Ignore him.
You can take this to be about Carson, as the narrator does, or you can take it to be a little picture into what American media and attitudes were like in the mid 70s, in case you’ve forgotten or weren’t born yet. The 70s are supposed to be *after* America stopped being all racist, but there’s this transitional period where people haven’t yet learned how not to make asses of themselves about racial issues or make really uncomfortable racial jokes.
We’re better about that now, right?… right? I guess our children will be the judge of that. :)