John Galliano’s reign at Dior was before my time. But he was the first Brit to put his mark on a great French couture house and, in any way you care to look at it, he has been one of the most consequential figures in fashion for the past four decades. Which is why it felt right that the Metropolitan Museum in New York should announce it would be holding a show of his work, and why it felt wrong when they pulled the show earlier this week.  Galliano's star burned brightly until early 2011, when over the course of two months or so he came apart. There was a damning video of him in a Paris café, hissing at a woman about her “ugly Jewish face” and later telling a man he was a “f-king Asian bastard” he would kill.