(CNN)  -- Dr. George Tiller knew that violence could come at any moment. For a reminder, he needed to think only of the old gunshot wounds in his arms from 1993 or the bombing of his clinic years earlier. Dr. George Tiller was one of the few U.S. physicians who performed late-term abortions. Still, Tiller, who was fatally shot at his Kansas church Sunday, continued to provide the late-term abortions that often brought protesters to his Women's Health Care Services clinic in Wichita. Tiller, one of the few physicians who was still offering such abortions in the United States, "made an effort to live his life as normally as possible, knowing he could be a target at any time," said Peter Brownlie, president of the regional Planned Parenthood office in Kansas City, Missouri.
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George Tiller was one of few remaining doctors in U.S. offering late-term abortions
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He had been shot in 1993 and lived under the constant threat of violence
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He made mark on confirmation process for head of health and human services
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"Third-trimester abortion is simply a part of abortion," Tiller said in 1999
In March, he was acquitted on 19 misdemeanor counts relating to how he obtained second opinions for late-term abortions, according to the @placeholder newspaper.