The Duty of Mercy, first published in 1776, is devoted to teaching kindness to animals as a duty. It takes into account the connection between racism and the exploitation of non-humans, and between the violence of the 18th century and the failure of society in general to suppress its cruelties.
Humphrey Primatt (1734 – c. 1776) was an English clergyman and early animal rights writer. Primatt has been described as "one of the most important figures in the development of a notion of animal rights." Source: https://en.wikipedia.org/wiki/Humphre...