Fur-donning celebs that include Mary Kate and Ashley Olsen best be wary of taking Park City by foot–PETA have descended on the Sundance Film Festival.

A line of protestors from People for the Ethical Treatment of Animals formed in front of Alaskan Fur Gallery on Main Street around 4:15 p.m., disrupting pedestrian traffic and chanting loudly.

“You must, you must, you must understand! Their blood, their blood, their blood is on your hands!” the group screamed on the bustling street, where several times Mary Kate was spotted walking, as well as Sir Ben Kingsley making the rounds in a leather snow cap and a shearling-lined coat.

Further up the street, a whole different commotion was caused by rapper 50 Cent. Fiddy was on hand to announce the launch of his new film production company with partner Randall Emmett at the Hard Rock Hotel & Casino at House of Hype.

The rapper’s security team shut down the venue allowing no re-entry or back door access once the star was in the building. Doubly dramatic was his exit.

With entourage in tow, 50 commanded so much attention that a promotion van for a film called Fix crashed into oncoming traffic due to rubbernecking.

No word on whether the protestors will pop up at any of tonight’s events, including the Entertainment Weekly bash, Motorola and Nintendo’s Late Night Lounge and Stereo’s Reaction Lounge.

50 is scheduled to return to the Hard Rock for a club night by Body English.

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