University bans fraternity after racist chant

What happened?
In Oklahoma, at the University of Oklahoma ...
... there is a fraternity called "Sigma Alpha Epsilon", or "SAE".
Some fraternity members were riding on a bus.
They sang a racist song.
The song was caught on video. Many people saw the video.
Here's one of the videos. Warning: it is very racist.
What did the video show?
Many members of the fraternity were singing a song.
The tune was "If you're happy and you know it, clap your hands."
The words were: "You can hang him from a tree, but he'll never sign with me ..."
"... There will never be a n***** SAE."
What were the consequences for the fraternity?
The national organization of SAE closed the chapter.
"I was shocked, disappointed, and disgusted by the racism in the video."
-- Brad Cohen, President of SAE
"This type of racist behavior will not be tolerated."
-- Brad Cohen
Oklahoma University banned SAE from campus.
"These people have acted in a way that is reprehensible and disgraceful" -- David L. Boren, President of the University of Oklahoma
The University will also try to punish the individual students.
"We're trying to take action against the students individually, the ringleaders especially."
-- Boren
The SAE house was vandalized.
What do other people say?
There was a demonstration to protest the incident. There were about 150 people there.
The demonstration was organized by a campus organization called "Unheard".
"It takes more than putting out a public apoogy. Unheard feels that more action is needed."
-- Kumba Sicarr, Unheard
"There must be a proper investigation. We hope that justice is served"
-- The Oklahoma NAACP
"I think it's time for fraternities to do some soul-searching."
-- Kunal Naik, President of OU's Student Government Association
What has SAE done in the past?
SAE was involved in several scandals in the past.
In December, in South Carolina, in Clemson University ...
... students dressed as gang members. It was called a "Cripmas" party.
In Arizona, at the University of Arizona SAE was involved in several scandals.
In November, they attacked students a Alpha Epsilon Pi, historically a Jewish fraternity.
In 2013, a member went to the hospital after he drank 30 ounces of tequila.
In 2012, a prospective member died after drinking too much.
Nationwide, between 2006 and 2014, nine people associated with SAE died from drinking too much.