Signs advertising medical marijuana presciptions outside an evaluation clinic on Venice Beach in Los Angeles on October 9, 2009. The Los Angeles Times newspaper reported that the District Attorney Steve Cooley claims all the medical marijuana dispensaries in Los Angeles county are operating illegally, and that 'they are going to be prosecuted.' 800 dispensaries operate in the city of Los Angeles and are legal under a 1996 vote that allows marijuana to be used for medicinal purposes.