Yup.
Here's an excerpt from this link on MMAJunkie that explains Monson's activism and anarchy issues.
While Monson was preparing for a fight in Portland, a film crew came to the gym and recorded his outfit that day,which included a tank top that read "Assassinate Bush." When he entered Portland's Rose Garden for the fight, a video clip of him training in the shirt was played on the Jumbotron, and after he finished off his opponent in the first round, he was more interested in speaking to the post-match media about the devastation of Hurricane Katrina than his fight career. He mentioned his anger that the Bush administration had diverted $76 million from the Army Corps of Engineers for the levies,and that the National Guard were in Iraq instead of Louisiana and Mississippi. "I was making a political statement, trying to open people's eyes" says Monson of his t-shirt and post-fight comments.
Not long after, he had three sets of open eyes walking through the doors of his gym. "The Secret Service told me that they wanted to search my gym and my house. They said that if I refused, they would have a warrant within an hour." They poked around the gym and then headed over to Monson's house. "I told them that they could go to my house if they wanted, but that I was going to stay here and finish my workout," Monson says, not sounding the least bit intimidated. "They haven't bothered me since."
ESPN magazine ran the photos and now Monson faces up to $20,000 in fines and 10 years in prison. Ouch.