On the far-right, Roseanne's cancellation isn't funny

  Roseanne always tried to walk a comedic edge. But, in a tweet about a former aide to President Barack Obama, that edge cut her.

  Now, the far right and the alt-right are trying to stop the bleeding and defend a racist tweet.

  “Roseanne learned today, like most of us, that Valerie Jarret identifies as black. Surprise!” conspiracy theorist and right-wing commentator Mark Dice tweeted.

  Barr is known to traffic in conspiracy theories, racist tweets and questionable comments online, but the tweet that did her in showed former Obama assistant Valerie Jarrett side by side with an ape.