Barton, a £5million signing from Manchester City last summer, has been "shocked" by the behaviour of Newcastle supporters - especially their treatment of manager Sam Allardyce.
"I have not yet seen the famous crowd I was expecting to hear get behind us," said the England midfielder. "Instead it has been vicious; I don´t think I have heard a crowd that vicious. The fans want success and they want it straightaway, but unless they change that mentality and start supporting the side through poor results then things won´t change."
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