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Changes to the forms required for firearms purchases asking questions about the buyer’s race and ethnicity have drawn strong reaction from gun dealers, privacy advocates and lawmakers.

Form 4473, required for an over-the-counter sale by a federally-licensed dealer, now asks first whether a buyer is Hispanic or Non-Hispanic, followed by a question delving into more detailed race-based information.

Critics want to know why the Bureau of Alcohol, Tobacco, Firearms and Explosives quietly made the change in 2012.