Bernie Sanders has repeatedly promise to raise taxes on every single working American. That's how he plans to pay for all the "free" things he wants to the government to dole out. You remember, stuff like "free" college tuition and "free" health care. Anyone who tries to argue with Senator Sanders is shot down by his crackpot base. You're supposed to ignore the unarguable facts that none of this is actually free, and that there's no way to cover the costs through tax hikes, because Bernie's fans like to say the word "free" a lot, and "utopia," and "You're going to love it," and "shut up."
A couple of weeks ago, Bernie promised that - if and when Democrats retake congress - he and his pals would do what they could to undo the GOP's big tax win. At the bare minimum, he wants corporations to pay more (which means individuals would pay more for everything they buy) and he still wants to tax the bejeezus out of the rich. However, suddenly, Bernie has turned into a taxation hawk, at least where the middle class is concerned.