Lady Gaga’s choreographer Richard ‘Richy’ Jackson has been accused of toxic behaviour by 10 dancers. The 43-year-old is said to have been abusive and used his power to demean staff “just because he could”. Dancer Caroline Diamond claimed in a video: “He abused me, he embarrassed me, he made me feel terrible in the workplace, just because he could. “Gaga was my dream… I chased it and I got it, and she is the dream, and then you get there, and this man makes your dream a nightmare.” Rolling Stone said in a story published on Thursday 10 dancers had spoken out against Jackson. It spoke with fiv…