Why don't they make white M&M's?
Because they'd enslave the dark brown M&M's,
... steal all the red M&Ms' land,
... hunt the blue M&M's to extinction,
... accuse the yellow M&M's of obstructing trade,
... start a panic that the little green M&M's
were invading the Earth,
... and complain that the damn light brown M&M's
were taking all their jobs.