The core concept from The Article to get you thinking:
The truest definition of racism is the separation of people into different categories based upon their appearance. If you believe, as an American or a citizen of any of other country, you are different in race than someone based upon your complexion, shape of your eyes, hair type or color, or even your linguistics, regardless of how you treat that person—then you are practicing racism. The separation of the human race into anything else is racism.
Racism limits the quality of our lives.