What would you do? Man's animal rights posters are grossing out co-workers

Periodically, we ask three HR pros how they’d handle a difficult situation at work. Today’s problem: An employee’s effort to raise awareness of animal rights issues is disturbing his co-workers.
The scenario
“I’m here to work, not be grossed out by pictures of abused animals!” said employee Cindy Alexander.
Cindy sat opposite HR manager Sam Camper in Sam’s office. She took a deep breath.
“I’m sorry,” said Cindy. “I don’t mean to be so harsh, but Jim Stewart’s obsession with animal rights is really starting to get to me.”
Cindy paused. “You know Jim. He’s a big animal rights guy, he volunteers at the local shelter, and so on.
“I’m 100% for animal rights, but I think Jim’s gone too far now that he’s putting this stuff up on his cubicle walls,” she said.
“What are you talking about?” asked Sam.
“Jim’s started posting photos of injured, bleeding and abused animals on his cubicle walls,” said Cindy. “He says he’s trying to ‘raise awareness.’
“Personally,” she continued, “they’re disturbing. I hate having to walk past his cube every day to get my lunch.”
“Well, have you spoken with Jim yet?” asked Sam.
“Of course,” said Cindy. “But all he did was use it as a soapbox to talk about the ‘poor creatures.’
“Other employees said he did the same thing when they tried to speak with him,” she added.
“Am I being too sensitive?” asked Cindy. “Or can you step in and say something to Jim?”
If you were Sam, what would you say or do next?
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What your peers had to say
An HR coordinator in Illinois
What he’d do: Since Cindy and other staffers already tried talking to Jim, I feel that HR can rightfully step in and ask Jim to take down the photos or move them to a place where only he can see them.
If Jim refuses, I’d get his manager involved and discuss disciplinary measures.
Reason: What people find offensive comes down to perception, and in this case it’s clear several workers perceive Jim’s photos to be out of line. Since his co-workers already tried speaking to Jim, it’s our turn to act.
An HR manager in New York State
What she’d do: We have a policy against bringing personal agendas into the office, so I’d reinforce that policy to Jim.
However, I would give him the option of putting the photographs in a folder and asking people if they’d like to see them.
Reason: As long as we’ve enforced our “no personal agendas in the workplace” policy consistently up until now, we should be able to firmly stand behind the policy and ask Jim to take the photos down. I also feel like allowing him to keep the photos in a folder is a fair compromise.
An HR manager in Washington State
What she’d do: First, I’d tell Cindy I understand where she’s coming from and that she shouldn’t feel bad about coming to HR.
I’d next speak with Jim and let him know the photos are making staff uncomfortable. I’d allow him to keep them posted, with one caveat: No one but him can be able to see them.
Reason: You can’t stress it enough: Employees need to respect each other. This is a situation where Jim’s actions are negatively affecting the team as a whole, and that means we need to take action to stop that.