An environmental activist who disrupted an oil and gas auction for land near Utah's national parks did so in protest, bringing attention to parcels that shouldn't have been for sale, his lawyers argued Thursday. Tim DeChristopher's conviction in the case should be overturned because his move was a form of civil disobedience intended to protect the environment from an auction he believed to be illegal, Ron Yengich said in federal appeals court. Yengich said that many of the 113 parcels up for sale were suspended from future bidding by the federal government because of attention drawn by DeChristopher's actions. DeChristopher is asking the court to overturn his conviction. He is now serving two years in a federal prison in California after a conviction last summer in Salt Lake City. DeChristopher contended during trial that the Bush administration rushed the auction without properly reviewing the parcels. Many of the parcels up for auction were later suspended soon after by President Barack Obama's Interior Secretary Ken Salazar in 2009. His lawyers say he was singled out for prosecution because of his honesty, and that the government never took action against bidders at other auctions who failed to pay or bounced checks for their parcels. DeChristopher is considered a folk hero in the environmental community for sabotaging the auction. He says he plans to continue a life of social activism after prison.