This paper tries to understand the social context of animal rights discourse. For this work, I try to explore the background and the legal, theoretical, political discussion of animal rights agenda today. Animals have been excluded from our moral community so that their interests are not considered through Speciesism based on difference between ``superior human`` and ``inferior animals``. So that they have been used on a large scale in the inhumane treatment only for the convenience of human beings, But at the same time, Growing public interest in the animal rights and treatment results in the social changes such as the activation of the animal advocacy movement and gradual improvement of related laws. When the concept of human rights was made in 18th century, it meant just the right of white men. After that, there have been political actions to end oppression towards various marginal groups such as the colored, disabled, women, LGBT etc. Although all of them have been only for ``humans`` so far, the boundaries of the social and political discussions about discrimination, dominance and rights are recently being pushed back over humans. Animal rights advocates perceive animals as a ``minority`` who becomes the object of discrimination and dominance based on power-relations. From the perspective, animals can be understood as``the most marginalized`` minority group with the lowest social status and voice.