Long before President Obama launched a thousand conservative attacks ads by telling a Virginia audience, “If you’ve got a business — you didn’t build that,” Massachusetts Senate candidate Elizabeth Warren raised thousands of liberal dollars with a very similar riff at an Andover, Mass., campaign event last year.

“You built a factory out there? Good for you,” Warren says in a video that quickly went viral on YouTube. “But I want to be clear: You moved your goods to market on the roads the rest of us paid for; you hired workers the rest of us paid to educate; … You didn’t have to worry that marauding bands would come and seize everything at your factory, and hire someone to protect against this, because of the work the rest of us did.”