The religion of Islam is for all people across all times. Mankind is scattered all across the world in different continents and backgrounds. The faith of Islam holds no place for arrogance and racism.
 No one is superior to another in any form. Allah subhana-wa-taala has made everyone equal and beautiful. The diversity in mankind is a sign of Allah's majesty and in there are the lessons of humility, equality, and appreciation of differences.

Allah mentions in glorious Quran 

“And among His wonders is the creation of the heavens and the earth, and the diversity of your tongues and colors. For in this, behold, there are messages indeed for all who are possessed of innate knowledge!” (Quran 30:22).
For a person who fears Allah and the day of Judgement and believes in the miracles of Allah, there lies a message that all creations of Allah are beautiful and no less than any other creation. 

“Oh, men! Behold, We have created you all out of a male and a female, and have made you into nations and tribes so that you might come to know one another. Verily, the noblest of you in the sight of Allah is the one who is most deeply conscious of Him. Behold, Allah is All-Knowing, All-Aware” (Quran 49:13).

It is clear from this verse that in the eyes of Allah the noblest among the humanity is the one with pious heart and who is deeply conscious of Allah. It doesn't matter what nation or tribe a person belongs to or what color he is Allah loves him and responds to his calls.
Allah says: “And among His wonders is this: He creates you out of dust, and then, behold! You become human beings ranging far and wide!” (Quran 30:20).

Clearly diversity in mankind is a wonder of Allah. There is no place for racism and one who does so will be liable for the punishment of Allah.

May Allah protect us.