Peter Singer
One of the ground pillars of modern, not only of animal rights movement, but all animal advocacy, “Animal Liberation” talks about the abolition of today’s animals in large-scale livestock farming. Philosopher Peter Singer made the term “speciesism”
popular, while not inventing it. This philosophic term means prejudgments towards animals, similar to what racism is for people of other origins and sexism for people of other gender.
A classic basic work for everybody interested in animal advocacy.