Michael Jackson memorial in Los Angeles televised around world, watched by 31 million US viewers; July 22 - Police raid Houston offices of Dr. Conrad Murray. Raids in Los Angeles and Las Vegas follow in later weeks; Aug 28 - Coroners rule Jackson death a homicide. Say cocktail of painkillers, sedatives found in body and that propofol was main cause of death. Dr. Murray now main focus of investigations; Sept. 3 - Jackson buried in mock Renaissance mausoleum near Los Angeles in private ceremony. __