evidence: In the days leading up to the first-in-the-nation primary, the Vermont senator is lighting up the former South Bend mayor over his billionaire donors while his aides are circulating talking points calling him "a favorite candidate of Wall Street and the health care industry." Hours before the presidential contenders were due on the debate stage, Sanders’ team also managed to get the hashtag #PetesBillionaires trending on Twitter. [...] Sanders’ talking points, which were obtained by POLITICO, state that Buttigieg is "soliciting money from corporate executives and billionaires to fund his campaign" and that he supported Sanders’ Medicare-for-All proposal until "he started raising big money." Forbes found that Buttigieg "has more exclusive billionaire donors than any other Democrat in the race." [...] "I like Pete Buttigieg. Nice guy. But we are in a moment where billionaires control not only our economy, but our political life," Sanders said, contrasting his rival’s high-ticket fundraisers with his small-dollar grassroots donors. "Which side are you on? Are you on the side of a working class of this country, which has been battered for the last 45 years? Are you willing to take on the greed and corruption of the billionaire class and the 1 percent? Or will you continue to stand with the big-money interests?"