It's wrong to hate someone based on skin color
Ronald doesn't like his coworker Steve very much at all, Steve asks why.
Ronald wants to answer Steve.
Ronald answers that Steve borrowed his pen on the first day and never gave it back.
Ronald answers that he doesn't like Steve because of the amount of melanin in his skin.
Steve apologizes to Ronald and gives him the pen back at once.
Now no one at work likes Ronald at all because of this.