Controversy is swirling around Dartmouth College because the school's Alpha Delta fraternity and Tri Delta sorority hosted a "Bloods and Crips" party last month.
According to the Dartblog, the school's news website, 200 of the mostly-white guests dressed up like Los Angeles gang members at the July 26 party.
One student said it turned into a "ghetto party with racialized [sic] language, speech and dress."
After the party was exposed in the Dartblog, the partiers repented.
"While there was never any ill intent in the party’s theme, the brothers of Alpha Delta now realize that it was insensitive and thoughtless to make light of a very serious issue that affects many people nationwide, particularly young people," Alpha Delta said in a statement.
"Gang violence is obviously an incredibly serious problem across America, and while we as a house failed to preemptively recognize the offensive nature of the party’s theme, the gravity of our oversight is now apparent to us."
Tri Delta also apologized and promised to "educate our members regarding cultural sensitivity and awareness."
The Dartmouth College chapter of the National Association for the Advancement of Colored People (NAACP) slammed the party along with the groups that hosted it.
Susan J. Boutwell, interim director of the Dartmouth Office of Public Affairs, told The Huffington Post that the school is looking into the "scope and nature of the event."