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Hillary Clinton gets heckled

Former Secretary of State Hillary Clinton isn't officially running for president but she's already attracting one of the regular features of the campaign trail: hecklers.

During an address to the annual meeting of the American Academy of Pediatrics Sunday in San Diego, someone in the 3,000 person crowd began to goad her using a bullhorn.

"You know, there are some people who miss important developmental stages," she said in response, according to San Diego CBS affiliate KFMB.

This isn't Clinton's first experience with an unfriendly face in the crowd. In April, a woman was taken into custody after throwing a shoe at Clinton while she spoke to the Institute of Scrap Recycling Industries meeting in Las Vegas.

Shoe thrown at Hillary Clinton

Clinton ducked as the shoe whizzed over hear head and was not hit, but didn't know what happened at first.

"Is that a bat?" she asked.

Then she joked, "Is that somebody throwing something at me? Is that part of Cirque de Soleil?"

"My goodness, I didn't know that solid waste management was so controversial," she added. "Thank goodness she didn't play softball like I did."

Her 30-minute remarks at the American Academy of Pediatrics Sunday focused on childhood literacy, giving her a chance to reference her new granddaughter born just two weeks ago.

"When I look into the eyes of my baby granddaughter, that's what I see, and I'm so grateful," she said.

She also applauded the audience of doctors for working to keep government away from decisions about medical care for children.

"Congress must not gamble with our children's future," she said.