Maria Callas’s career was equal parts iconic and controversial—but it had nothing on her absolutely explosive life behind the scenes. This first-class diva threw legendary temper tantrums, started feuds that would make Joan Crawford raise her eyebrows, and broke up one of the most iconic couples in American history in the most scandalous way imaginable. After all that, it’s fitting that her end was just as dramatic. 1. Her Family Was ToxicMaria Callas had beginnings worthy of one of her operas. Born in December 1923, her parents George and Litsa were Greek immigrants to New York hoping to make…