By Lester Holt, NBC News anchor
Today's shooting death of a Kansas physician who performs abortions exposes the raw nerve that represents the social issue of our time. Without a doubt, it will lead to some passionate conversations and exchanges in the days to come. On our broadcast tonight, we will tell you what we know about today's attack in Wichita on late-term abortion provider Dr. George Tiller, who survived another shooting attack back in 1993. We're also working to learn more about the suspect who was taken into custody hours later.