“I talk to nurses and programmers, salespeople and firefighters, people who bust their tails every day. Not one of them — not one — stashes their money in the Cayman Islands to avoid paying their fair share of taxes,” the Massachusetts Democrat said of Romney, a barb that elicited a roar of applause. “Mitt Romney wants to give billions in breaks to big corporations — but he and Paul Ryan would pulverize financial reform, voucherize Medicare and vaporize Obamacare,” Elizabeth Warren