LOS ANGELES— After a two-decade reign as King Of Pop, Michael Jackson was overthrown Tuesday in a hitless coup. "Following the lackluster performance of Invincible and its mildly received 'You Rock My World' single, Michael has lost the support of the populace necessary to maintain his throne," said Billboard magazine pop-political analyst Daniel Farrior. "To be honest, it's amazing he held onto his kingship after Blood On The Dance Floor." Upon learning of the coup, millions of music fans stormed the nation's music stores, carrying off armloads of CDs by artists other than Jackson.