Picketty on Sanders and the rest

See this article, which references Piketty's piece in The Guardian. Picketty sees Sanders are representing the end of the Reagan era and a return to the era of  "extremely progressive taxation and social spending." From 1930 to 1970 the marginal tax rates on the wealthy was on average 82%, which revenue went to building the New Deal and Great Society. Sanders and the people's movement behind him wants this return to equality and justice, but Clinton is "another heiress of the Reagan-Clinton-Obama political regime" that maintains Reaganomics.