Complex sentence: Animal liberation is also a movement aimed at liberating non-human animals from human exploitation or use, also known as the animal rights movement, although many activists who call themselves liberationists do not subscribe to the idea that animals have moral rights that should be protected.
Split into simpler sentences: Animal liberation is also a movement aimed at liberating non-human animals from human exploitation or use. The Animal Liberation movement is akin to the animal rights movement, although many activists who call themselves liberationists do not subscribe to the idea that animals have moral rights that should be protected.