Billionaire Elon Musk sparked controversy after making a gesture at an event celebrating US President Donald Trump's inauguration, with some calling it a "Nazi" or "fascist" movement. However, a leading tracker of anti-Semitism said it appeared to represent a moment of enthusiasm instead. Mr Musk took the Capital One Arena stage in Washington to huge cheers, pumping his arms and shouting, "Yesssss." "This was no ordinary victory. This was a fork in the road of human civilisation," he said. "This one really mattered. Thank you for making it happen! Thank you," he said. Biting his bottom lip, he thumped his...