In just 24 hours, Roseanne Barr posted a racist tweet, apologized, and left Twitter.
She singled out Valerie Jarrett, a black former adviser to Barack Obama.
Barr tweeted Jarrett was the “baby” of Egypt's Muslim Brotherhood and 'Planet of the Apes.'
Buzzfeed reports Barr was instantly jeered by celebs and her hit show was canceled.
Rita Moreno tweeted at Barr saying, “Your meanness is staggering.”