President called inequality the `` defining challenge '' of our time but has downplayed it since . Minority Leader Nancy Pelosi proposed an agenda she would champion for the first 100 days in the unlikely event the Democrats regain control of the House in November . Zelizer : Democrats have been wary of making the issue their focus . He says Warren is right to emphasize it , and it could be a winning issue for Democrats . Julian Zelizer : When Social Security has targeted programs like GOP , it has suffered .
President called inequality the `` defining challenge '' of our time but has downplayed it since . Zelizer : Democrats have been wary of making the issue their focus . He says Warren is right to emphasize it , and it could be a winning issue for Democrats . Julian Zelizer : When Social Security has targeted programs like GOP , it has suffered .