Panic rippled across our battered national landscape Friday when the Supreme Court revealed Justice Ruth Bader Ginsburg, 86, has faced down cancer again, completing three weeks of radiation for a tumor on her pancreas. Given that many deem her all that stands between us and end times, Twitter users rushed to offer best wishes, random organs, their first-born, eternal life. She's working on it: Doctors say she's cancer free, and between treatments she went shopping and to theater.