Operation Rescue Founder Says Tiller Mass Murderer

I'm telling you, this guy Randall Terry is a nut job. Terry is the same guy that led protests against Obama's appearance at Notre Dame. He called Obama an "agent of death." Language like that inspires the mentally unstable:

Randall Terry, founder of Operation Rescue, led protests against George Tiller's late-term abortion clinic in Wichita in 1991.
Randall Terry, founder of Operation Rescue states, "George Tiller was a mass-murderer. We grieve for him that he did not have time to properly prepare his soul to face God. I am more concerned that the Obama Administration will use Tiller's killing to intimidate pro-lifers into surrendering our most effective rhetoric and actions. Abortion is still murder. And we still must call abortion by its proper name; murder.
"Those men and women who slaughter the unborn are murderers according to the Law of God. We must continue to expose them in our communities and peacefully protest them at their offices and homes, and yes, even their churches." EM

Terry fails to call the murder of George Tiller murder. Earlier, Operation Rescue put out a statement saying they didn't condone violence. Read that here. But Operation Rescue is fairly radical and had a "Tiller watch" on their site, which is down now. This incident could be an example of right wing extremism, though we don't have a motive yet. 
Here is Obama's statement:

"I am shocked and outraged by the murder of Dr. George Tiller as he attended church services this morning. However profound our differences as Americans over difficult issues such as abortion, they cannot be resolved by heinous acts of violence."

Update
Eric Holder's statement:

"The murder of Doctor George Tiller is an abhorrent act of violence, and his family "The murder of Doctor George Tiller is an abhorrent act of violence, and his family is in our thoughts and prayers at this tragic moment. Federal law enforcement is coordinating with local law enforcement officials in Kansas on the investigation of this crime, and I have directed the United States Marshals Service to offer protection to other appropriate people and facilities around the nation. The Department of Justice will work to bring the perpetrator of this crime to justice. As a precautionary measure, we will also take appropriate steps to help prevent any related acts of violence from occurring." USDOJ

Update
The shooter is apparently Scott Roeder.