George Tiller long ago erased the line between his private life and his public cause, turning his Wichita, Kans., clinic into ground zero in the fight over late-term abortions. Tiller, 67, lived with death threats and was shot in both arms in 1993 by an antiabortion activist. His clinic had been bombed and was the frequent site of protests and prayer vigils, and he was the target of unsuccessful citizen-led legal challenges to shut down his clinic