JOHANNESBURG, South Africa (CNN) -- White students at a South African university tricked black residence hall workers into eating stew containing urine, prompting a march Wednesday in which five people were arrested, university officials said.The white students made a video of the incident, which they staged in reaction to the university's efforts to integrate its residences, according to a statement from the University of the Free State.The protesters on Wednesday included black and white students who later marched to the residence where the video was made and demanded that it be shut down, witnesses said.The video surfaced on Tuesday but was made in September, the university said.In the video, white male students at Reitz Residence are seen encouraging at least three black female housekeepers to participate in what the students call the "Reitz Fear Factor," an apparent reference to the television show in which contestants eat live worms or compete in other feats. Watch excerpts of video that sparked outrage » In one scene from the video, a student mixes what looks like a beef stew in a plastic bowl and adds garlic and other items. Then he tells the camera he will add the "special ingredient."The student then urinates into the mixture, which he later stirs up and puts in a microwave. Other students can be heard laughing on the tape. he next scene shows a different student urging at least three housekeepers to drink cups full of the stew, saying, "This is our dorm's 'Fear Factor.' We want to see who has the best 'Fear Factor.'"On the video, the student does not tell the women that there is urine in the mixture.The women, on their knees, spit the stew into buckets after tasting it. Some appeared to vomit, but the women also laughed during the incident as the student urged them on. SOURCE OF THIS STORY