Approximately 13% of the world's population are southpaws. We don't talk about in front of strangers but my own father leans to the left. We'll never know the true percent of lefties because many were forced to change handedness during childhood by teachers, parents, or the Aryan Society for Right Handed World Domination (you didn't hear it from me).
While historically, we enjoy shunning and/or ridiculing minorities, according to Chris McManus this tiny percentage has produced an above-average quota of high achievers.
The magnitude of famous lefties is truly outstanding considering there's no explanation for why people are left handed.