Nope, just the biggest one (Holocaust), the second biggest being Holodomor, an Stalin's attack to Ukranian Nationalism. Genocides in Nigeria and similar ones are ethnic ones for political power, without justification over biological differences.
If it wasn't race, it would family names or family colors/flags, gender, buck-teeth or what-have-you, as shown throughout history. Bickering and bigotry aren't reason for arbitrarily changing things.