Complex sentence: The Crown Heights riot was a three-day ethnic riot that occurred from August 19 to August 21,1991 in the Crown Heights section of Brooklyn, New York City by black residents against Orthodox Jewish residents, causing deteriorated racial relations.
Split into simpler sentences: The Crown Heights riot was a three-day ethnic riot that occurred from August 19 to August 21,1991 in the Crown Heights section of Brooklyn, New York City. It turned black residents against Orthodox Jewish residents, causing deteriorated racial relations.