ABC on Tuesday canceled Roseanne, the popular reboot of the 1990s sitcom, after the show's biggest star, Roseanne Barr, posted a racist "joke" on Twitter in reference to former Obama administration official Valerie Jarrett, who is black. Barr apologized, saying her remark was in "bad taste." She later asked fans not to defend her or boycott ABC, calling her comments "indefensible." "It was 2 in the morning and I was Ambien tweeting," she said. ABC called her tweet "abhorrent, repugnant, and inconsistent with our values." Before ABC's announcement, one of the show's actors, Emma Kenney, and consulting producer Wanda Sykes, had decided to quit. Barr's talent agency, ICM Partners, also dropped her.