By Michael Tedder Twitter CEO Parag Agrawal tried to reassure employees in a leaked all-hands call. A significant portion of Twitter’s employee base are not thrilled that they will soon be working for Elon Musk. The announcement that the Tesla CEO had succeeded in his aggressive $44 billion bid to buy Twitter (TWTR) – Get Twitter, Inc. Report has reportedly upset many employees. Leaked messages on Slack revealed a worker base worried that Musk will gut what moderation exists on the service, which is already heavily criticized for not doing enough to rein in conspiracy theories and hate speech….