Anti-speciesism was the idea that speciesism was inherently wrong in every way. Whereas speciesism discriminated against other species of the galaxy, anti-speciesism defied the idea and sought to abolish it in all forms, especially Humanocentrism and Anti-Humanism.
The Rights of Sentience clause of the Galactic Constitution promoted this ideal alongside the Rights of Sentience League. The Jedi Order practiced this as a way to protect all instead of just some, and so did the New Jedi Order. The New Republic's Rights of Sentience Party promoted this concept during the government's reign.