why was roseanne barr fired from the conners

Roseanne Barr was fired from the show that led to the creation of "The Conners" because she posted a series of racist tweets about Valerie Jarrett, a former senior advisor to President Barack Obama. Barr's tweet, which compared Jarrett to "the Muslim Brotherhood and Planet of the Apes," was widely condemned as racist. ABC canceled the revival of "Roseanne" shortly after the tweet and decided to continue the story without Barr by creating the spinoff "The Conners," where her character was written out by an offscreen death due to an opioid overdose. The network deemed Barr's comments abhorrent, repugnant, and inconsistent with their values, ending her association with the show permanently.