Why did Jewish-American Howard Stern mock native Tejana(Texan)singer Selena,after she was murdered?

I heard he had said negative comments regarding Selena's:music,loyal fans,Selena's private Jehovah's Witness funeral as well as other things.I heard he had labeled Selena a "foreigner"and a "Mexican".Just to set things straight Selena was a native of Texas(born and raised in Texas),Her father was a Texan,born and raised(of Mexican ancestry) and her mother was half Mexican-American & half north American Indian.Selena was very far from being a "foreigner".Jewish-American Howard stern needs to get his facts straight,before he decides to open that foul mouth of his!