Donald Trump has unleashed a series of nasty personal attacks against his Democratic opponent, Hillary Clinton, mocking her appearance and questioning her mental health several times during a New Hampshire campaign rally and on social media. "She is a totally unhinged person. She's unbalanced. And all you have to do is watch her, see her, read about her," Trump said during a campaign rally in Windham, New Hampshire. "She will cause - if she wins, which hopefully she won't - the destruction of our country from within."