Sir Lenny Henry On Being A Black Hobbit In The Lord Of The Rings

Hobbits are a race, and Harfoots are a breed. I'm not sure about "multi-cultural" or "tribe", wtf? But Harfoots are described as being browner of skin in LoTR:

Before the crossing of the mountains the Hobbits had already become divided into three somewhat different breeds: Harfoots, Stoors, and Fallohides. The Harfoots were browner of skin, smaller, and shorter, and they were beardless and bootless; their hands and feet were neat and nimble; and they preferred highlands and hillsides. The Stoors were broader, heavier in build; their feet and hands were larger, and they preferred flat lands and riversides. The Fallohides were fairer of skin and also of hair, and they were taller and slimmer than the others; they were lovers of trees and of woodlands.

/r/LOTR_on_Prime Thread Link - bleedingcool.com