A Houston-based rapper said his decision to call himself the "Arabic Assassin" was meant to stir up a bit of controversy in the music business. The stage persona — along with some incendiary lyrics in one of his songs — also helped get Bassam Khalaf fired this month from his job as a baggage screener at Bush Intercontinental Airport. "I thought it was kind of ridiculous. What does my music have to do with my job?" Khalaf said Thursday. He lost his job July 7, about six months after he joined the Transportation Security Administration as a baggage screener. "He...