A group of Harvard researchers is recommending the U.S. Census Bureau not use differential privacy in the 2020 census, the Associated Press reports. The technique does not universally protect participants’ privacy, said the researchers, who argue the Bureau should turn to a method used in 2010 that swapped data in some households with others. Differential privacy “negatively impacts the redistricting process and voting rights of minority groups without providing clear benefits,” researchers said.  
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