Toby Keith was still the roadhouse patriot in concert at Staples, but behind the scenes his feelings are more complex. As he sang the lyrics to his celebrated patriotic hit Sunday at Staples Center, red, white and blue confetti rained down on the curled brim of Toby Keith's cowboy hat and rocket-red pyrotechnics shot up past a video screen showing the Statue of Liberty. This was the Toby the crowd wanted and expected, the roadhouse patriot. But a few hours earlier, in a hushed dressing room, it was a different Keith — one who talked about the increasingly onerous challenge...