Who mentions that? That wasn't in the video you posted, unless I missed it.
Note that Islam denounces and opposes distinguishing or discriminating people by their race.
Allah says in His Book: "O mankind! Lo! We have created you male and female, and have made you nations and tribes that ye may know one another. Lo! the noblest of you, in the sight of Allah, is the best in conduct. Lo! Allah is Knower, Aware." (49:13)
Narrated Ibn 'Umar that the Messenger of Allah (ﷺ) gave a Khutbah to the people on the day of the conquest of Makkah, and he said: "O you people! Verily Allah has removed the slogans of Jahiliyyah from you, and its reverence of its forefathers. So, now there are two types of men: A man who is righteous, has Taqwa and honorable before Allah, and a wicked man, who is miserable and insignificant to Allah. People are children of Adam and Allah created Adam from the dust. Allah said: O you people! We have created you from a male and a female, and made you into nations and tribes, that you may know one another. Verily, the most honorable of you with Allah is the one who has most Taqwa. Verily, Allah is All-Knowing, All-Aware (49:13)." (Tirmidhi 3270, Grade: Hassan)
>What is that?
Arabic 2nd person pronouns.
Singular masculine, singular feminine, dual, plural masculine, plural feminine, in that order.