Story highlights Hillary Clinton says she won't respond to Donald Trump with a nickname for him

Clinton running mate Tim Kaine says most stopped name-calling at 'about fifth grade'

Philadelphia (CNN) Hillary Clinton "felt sad" watching a Republican National Convention that was mostly about "criticizing me," she said an interview aired Sunday night on CBS' "60 Minutes."

"I seem to be the only unifying theme that they had," the presumptive Democratic nominee said. "There was no positive agenda. It was a very dark, divisive campaign. And the people who were speaking were painting a picture of our country that I did not recognize -- you know, negative, scapegoating, fear, bigotry, smears. I just was so -- I was saddened by it."

It was the first joint interview that Clinton and her new choice for the vice presidential nomination, Sen. Tim Kaine of Virginia, have conducted since Clinton introduced Kaine on Saturday in Miami.

Clinton complained of a "Hillary standard" -- suggesting that she faces more scrutiny than other top-level politicians.

"I often feel like there's the Hillary standard and then there's the standard for everybody else," she said.

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