Left handed people and vegans have not historically been the victims of institutionalized societal discrimination. Women have been (indeed still are).
https://www.wikiwand.com/en/Bias_against_left-handed_people#...
https://www.nytimes.com/1991/04/04/us/being-left-handed-may-...
What makes you think this?
Anything else is just enforcing some ideaology or another.
https://www.theatlantic.com/business/archive/2017/02/race-ec...
That is hopelessly naive. Someone has to decide who is "the best", or, at the very least, someone has to decide on the quality metric that will be used to make this assessment. That inevitably leads to politics and gamesmanship.