U.S. Senator Bernie Sanders on Sunday called on California Democrats to unite against Donald Trump, kicking the 2020 presidential campaign into high gear with jabs against the Republican president and a veiled swipe at Democratic rival Joe Biden. Sanders called Trump “a racist, a sexist, a homophobe and a religious bigot” in a speech capping off a state Democratic convention that drew fourteen of the 24 candidates to make their case before 5,000 delegates, guests and press in the most populous – and most heavily Democratic – U.S. state. The party’s left-leaning delegates greeted Sanders and liberal U.S. Senator Elizabeth Warren like rock stars.