On Twitter, Roseanne Barr described Obama’s aide Valerie Jarrett as the offspring of the Muslim Brotherhood and Planet of the Apes. After this profoundly offensive and racist statement, ABC cancelled the very popular reboot of Barr’s sitcom “Roseanne.” ABC’s statement was the epitome of brevity, clarity, and punch: Statement by Channing Dungey, president, ABC Entertainment Roseanne’s … Continued