Federal prosecutors claim R Kelly “poses a serious danger to the public”. Prosecutors in the US have recommended that the ‘I Believe I Can Fly’ singer should serve at least 25 years in prison for sexually abusing women after girls after he was found guilty of racketeering and trafficking last year. In a sentencing memo filed this week, prosecutors said he “preyed upon children and young women for his own sexual gratification” for decades by relying “upon his fame, money and popularity”. They added: “He continued his crimes and avoided punishment for them for almost 30 years and must now be hel…