US presidential candidate Hillary Clinton has apologised for calling half of Donald Trump's supporters "deplorable" people.
But the Democrat launched a furious attack on her Republican opponent and promised to keep fighting "bigotry and racist rhetoric".
Mr Trump had responded by saying the comment was "insulting" to "millions of amazing, hard working people".
Opinion polls suggest Mr Trump is gaining on Mrs Clinton.
The rivals are neck and neck in the key battleground states of Ohio and Florida.
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