NAPA (CBS / AP) — Some Napa County mothers are doing what comes naturally outside the local Social Security office where a woman was asked to take her breastfeeding outside last week.

The Napa Valley Register reported that about two dozen moms and their children staged a nurse-in on Monday to remind government workers that California law makes it legal to breast feed inside federal buildings.

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Cherissa Lowgren told the Register that she saw a security officer told another breast-feeding mom who was nursing her baby inside the Social Security office last Tuesday to leave.

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Social Security Administration spokesman Deogracias Santos called the woman’s experience an unfortunate event and said the guard probably was unaware that mothers have the right to breastfeed where they want.

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