Hillary Clinton jokes that all blacks 'look alike' after interviewer confuses Eric Holder with Cory Booker
- She made the joke after an interviewer botched a question about Holder's 'Kick them' comment
- The questioner mistakenly attributed the comment to Booker
- 'That was Eric Holder,' Clinton corrected her interviewer
- The apparently mocked the questioner, saying: 'I know they all look alike'