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It looks like she wore leather boots to the protest:
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Why Olivia Munn? Has PETA lost all credibility with even passably recognizable celebrities? Munn’s sole claim to fame is that she just is pretty enough to get science fiction and video game geeks to pay attention to her. She is Kate Gosselin with a nasty Vulcan nerve pinch.
She is not a favorite among that crowd, either, much less the public as a whole. She will never hit mainstream popularity. so who is the target audience here?