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Sean Penn Lashes Out at Fan

David Paul Morris/Bloomberg via Getty Images(SAN FRANCISCO) -- Sean Penn went ballistic in a San Francisco hotel Tuesday night after a fan tried to snap his picture, TMZ reports.

According to TMZ, a witness says the 53-year-old actor saw a camera flash go off and ran after a guy screaming, "Do we look like f**king zoo animals?"

The gossip website claims Penn, who was there to speak at a sales conference, also grabbed the man's phone and threw it to the ground.

In a video posted on TMZ, Penn is heard yelling, "I'll make you eat the phone...get the f**k out of here." A little later, he appears to be telling to a hotel manager, "You should do something about that."

Sources tell TMZ that hotel management approached the fan, who had also attended the sales conference where Penn spoke, and asked him if he wanted to call the police.  The man reportedly declined and left the bar.

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