When the United States invaded Iraq more than four years ago, war opponent David Gross asked his bosses for a radical pay cut, enough so he wouldn't have to pay taxes to support the war. I was having a hard time looking at myself in the mirror," Gross said. "I knew the bombs falling were in part paid with my tax dollars. I had to actually do something concrete to remove my complicity." The San Francisco technical writer was making close to $100,000 a year. He ... later figured out he would have to make less than minimum wage. In any event, his employer turned him down and he quit. Gross, 38, now works on a contract basis, and last year he refused to pay self-employment taxes. War tax resistance, popularized by Henry David Thoreau in the 19th century and by singer Joan Baez and others during the Vietnam War, is gaining renewed interest among peace activists upset over the Iraq war. "We definitely had more people calling, sending e-mails about how they decided to start resisting," said Ruth Benn, coordinator of the National War Tax Resistance Coordinating Committee in New York. Benn estimates 8,000 to 10,000 Americans refuse to pay some or all of their federal taxes over war objections. Many tax protesters say they redirect the money they withhold to charities. Some, like Joanne Sheehan of Norwich, keep their income below taxable levels. "I don't see the point of working for peace and paying for war," Sheehan said.