As he sits in a prison cell, Timothy McVeigh quietly has emerged as the poster boy for the latest appeal by right-wing hate groups. They call him a “lone wolf,” a freelance activist who takes sole credit for the nation&#039s worst act of domestic terrorism. At a time when extremist groups find themselves increasingly infiltrated, investigated and discredited, some are reaching out to the unaffiliated to carry out their mission of revolution and destruction. Full Story