Yikes! Photo: Samuel Corum/Getty Images For many decades, true-blue anti-government conservatives and libertarians have secretly or semi-secretly longed to take a chain saw to Social Security, the crown jewel of the New Deal and of America’s sorta-kinda welfare state. But with a few exceptions (e.g., Barry Goldwater in his disastrous 1964 presidential campaign and George W. Bush in a 2005 partial-privatization initiative that went nowhere), Republican politicians have understood that Social