Some info and a short description of this South Park episode on South Park Zone:
South Park - The Death Camp of Tolerance is episode 93 of the Comedy Central series South Park. It was originally broadcast on November 20, 2002.
Mr. Garrison tries to get fired for discrimination by performing inappropriate acts in class with his new teaching assistant, so he can file a lawsuit against the school, but the school administration instead sends the students to a "tolerance camp" to learn how to deal with people of different walks of life. Principal Victoria concludes that Mr. Garrison and Mr. Slave are "intolerant of their own behavior", and she is sending them to the Tolerance Camp so they will accept themselves.
South Park Spoiler Alert!
(The complete plot for this South Park Episode)
In this episode, Mr. Garrison is finally promoted from being the kindergarten teacher to the fourth grade teacher, after having been previously demoted for admitting to be G. However, realizing that getting fired could allow him to sue the school for millions, he decides, along with his S&M partner, Mr. Slave to do outrageous acts in the classroom, culminating with Lemmiwinks, the class pet.The children's parents, hearing the children complain about their teacher's behavior, feel they are intolerant so, the adults send the children to the Museum of Tolerance to learn about tolerance of minorities or those with different life choices. Garrison, annoyed no one has complained about his actions, steps up his campaign to get fired by pushing things further.
The children mention their discomfort to Chef, who in turn, reports Garrison's actions to Principal Victoria, but ends up being sent to a "tolerance seminar". Stan, Kyle, Cartman and Butters refuse to attend class, so their parents send them to an Auschwitz-like "tolerance camp". All of the scenes inside the camp are shown in black-and-white, an homage to Schindler's List.
Back at school, Mr. Garrison is set to receive the "Courageous Teacher Award" for overcoming adversity. Frustrated that he has not been fired, he doubles his efforts. Meanwhile, Lemmiwinks traverses the regions of Mr. Slave's digestive system, receiving advice from three animal spirits who have been killed while trying to escape.
Although the parents are indeed shocked at Garrsion's behavior, they cannot bring themselves to criticize it, as they fear being branded "intolerant". When the people continue to call Garrison and Mr. Slave "courageous" for their actions, Garrison finally breaks down and shouts at them that "tolerating something doesn't mean you have to approve of it." He goes on to say that tolerating his way to be should not mean that he can do things which are obviously inappropriate in front of his students and begs to be fired so that he can collect on a discrimination lawsuit, but Principal Victoria says she has a better idea.
The parents hurry to collect their malnourished and emaciated kids from the tolerance camp, but fail to realize that they ever tried to tell them about Garrison's behavior. Principal Victoria concludes that Garrison and Mr. Slave are "intolerant of their own behavior", and she is sending them to the tolerance camp so that they will accept themselves. As these chain of events all occurred, Lemmiwinks traversed the regions of Mr. Slave's digestive system, receiving advice from three animal spirits - the Frog Prince, Sparrow Prince and Catatafish. As Mr. Slave arrives at the tolerance camp, he coughs up Lemmiwinks. The spirits, now free, appear before Lemmiwinks and crown him "the Gerbil King". Lemmiwinks exits the scene with the "Ballad of Lemmiwinks" playing over the credits.