The importance of diversity in the human race is of the utmost evolution epoch. We as humans, need the willing challenge to learn from changes or differences because that's how we compare ourselves against.
Being human, means, learning from everything.
We can succeed way more objectively... vs other living beings, if we do really give ourselves time and the ability to learn from others.
It's not an easy task I know...
...but especially with all the differences we all have around the world, we have a common way of rooting these challenges towards our own way of calling ourselves "humans".
That's progressing/evolving within ourselves!
No other race/species will drastically evolve as fast as we do against their own race, cooperatively and drastically aggressively at the same time.