"WASHINGTON — After months of wincing in the face of negative ads funded by the industrialists David and Charles Koch, Democrats believe they have finally found a way to fight back: attacking the brothers’ sprawling business conglomerate as callous and indifferent to the lives of ordinary people while pursuing profit and power.

By drawing public attention to layoffs by subsidiaries of Koch Industries across the country — a chemical plant in North Carolina, an oil refinery in Alaska, a lumber operation in Arkansas — Democrats are seeking to make villains of the reclusive billionaires, whose political organizations have spent more than $30 million on ads so far to help Republicans win control of the Senate.

The approach should seem familiar. President Obama and his allies ran against Mitt Romney in 2012 by painting a dark picture of Bain Capital, the firm Mr. Romney founded, as a company that cut jobs and prized the bottom line over the well-being of its employees. "

Jeremy W. Peters and Carl Hulse report for the New York Times April 5, 2014. [2]