It is precisely the little dissimilarities in persons who are otherwise alike that arouse feelings of strangeness and enmity between them.
Illustration by Dr. Seuss: From the Hebrew translation of The Sneetches and Other Stories (1961)
Now, the Star-Belly Sneetches
Had bellies with stars.
The Plain-Belly Sneetches
Had none upon thars.
Those stars weren’t so big. They were really so small
You might think such a thing wouldn’t matter at all.