"Moral transgressions" refer to actions or behaviors that go against commonly accepted moral or ethical principles. It means doing something that is considered wrong or morally unacceptable. Full definition
This, in turn, makes their judgement of moral transgressions less severe. (newscientist.com)
From the abstract: «After viewing a few organic foods, comfort foods, or control foods, participants who were exposed to organic foods volunteered significantly less time to help a needy stranger, and they judged moral transgressions significantly harsher than those who viewed nonorganic foods.» (canadianbusiness.com)
Dostoevsky's Raskolnikov from Crime and Punishment teaches us about moral transgression and justice. (firstthings.com)