‘Newsnight’s kindest critic’: Bonnie Greer was always effortlessly in command

<p>Playwright was an unusual mix of originality and authority and in high demand as a cultural critic</p><p>Bonnie Greer, who has died at the age of 77, moved to the UK from New York in 1986. She grew up in Chicago, had six siblings, her father worked in a factory and her mother “k