Complex sentence: Selena, an American singer, was murdered by her friend and employee of her boutiques Yolanda Saldívar, who was embezzling money from the establishments; the event was named "Black Friday" by Hispanics.
Split into simpler sentences: Selena, an American singer, was murdered by her friend and employee of her boutiques Yolanda Saldívar who was embezzling money from the establishments. The event was named "Black Friday" by Hispanics.