This comment made me wonder what type of norm you’re asking about. From Wiktionary:
That which is normal or typical.
Unemployment is the norm in this part of the country.
A rule that is imposed by regulations and/or socially enforced by members of a community.
Not eating your children is just one of those societal norms.
On second thought, veganism maybe is neither 1. nor 2., at least this is what the EA survey found 5 years ago about the frequency of veganism and vegetarianism:
39% of the effective altruism population reported being vegan or vegetarian
This comment made me wonder what type of norm you’re asking about. From Wiktionary:
On second thought, veganism maybe is neither 1. nor 2., at least this is what the EA survey found 5 years ago about the frequency of veganism and vegetarianism: