Philadelphia: US presidential candidate Hillary Clinton said on Thursday the challenges facing Americans demand steady leadership and a collective spirit, and called rival Donald Trump dangerous and volatile.
Clinton accepted the Democratic presidential nomination for the Nov. 8 election promising to make the United States a country that worked for everyone.
"We are clear-eyed about what our country is up against. But we are not afraid," Clinton said.
Talking about Trump, she said, "He's taken the Republican Party a long way, from 'Morning in America' to 'Midnight in America'".
"He wants to divide us - from the rest of the world, and from each other."
She dismissed the idea of Trump as President, saying "a man you can bait with a tweet is not a man we can trust with nuclear weapons."
In her speech, Clinton acknowledged some people still do not know her well.
"I get it that some people just don't know what to make of me. So let me tell you. The family I'm from, well no one had their name on big buildings," she said in a reference to Trump.