Don't mess with James Gandolfini

Don't mess with James Gandolfini when he's boutique-hopping.

The "Sopranos" star got into a spat with an amateur paparazzo while shopping with his step-mom on Jane Street. In video of the incident posted by the fotog on Guest of a Guest, a mad Gandolfini sneers, "You understand me? I'm gonna break your [bleep]ing face," before smacking the camera to the ground.

The lensman tells us, "I'm not used to this type of abuse. I was not shooting James for any job, but just because I am a fan of his. The attack was totally uncalled for." A friend of Gandolfini says, "The kid had been following him for an hour. He was a stalker."

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