When did the GOP go from being merely stupid to downright suicidal? In the final scene of Thelma & Louise, when Detective Hal Slocumb realizes that the two desperate demoiselles are about to drive off the edge of the Grand Canyon, he runs after them in a futile attempt to stop their senseless suicide. When I first watched that scene, twenty years ago, my primary emotion involved the tragic loss of that '66 Thunderbird. Now I think I finally understand the impotent despair the film's screenwriter, Callie Khouri, was attempting to convey when she sent Slocumb on his hopeless sprint....