Anti-Alien League
From Wookieepedia, the Star Wars wiki.
The Anti-Alien League was a group formed by Gorton Colu, a resident of Taris. He believed that Humans were superior to aliens, and that all aliens should be removed from the Upper City.
The memory-wiped Revan encountered Gorton Colu, preaching his speciesism in the Upper City. Revan criticized him for hate-mongering and ignorance and moved on. Mission Vao and Zaalbar taunted him. He spoke of "vermin invaders" repeatedly, echoing throughout the streets as Revan and his companions walked in the Upper City.
The Sith allowed Colu to spread his message freely during their occupation of Taris, and Colu seemed to believe that they would be sympathetic to his cause.
The exact fate of the organization following the destruction of Taris is unknown, but as no evidence is provided that the Anti-Alien League had offworld connections, and furthermore as even highly humanocentric locals shunned Colu and his apocalyptic "day of reckoning" speeches, it is safe to assume that the organization was destroyed along with the life of its founder.
[edit] Behind the scenes
If Revan chooses to follow the path of the dark side, he agrees with Colu and calls for all non-humans to be slaughtered. Also, Revan has an opportunity to enrage Colu by bringing Mission, Zaalbar, or both with him as he speaks to Colu in the Upper City.
