Here's an article on the kinds of things other than assassination attempts, vandalism, and break-ins that Dr. Tiller and his staff have had to endure for years.(once Operation Rescue West; the group split), who moved to Wichita in order to shut George Tiller's clinic down:

"There's only one problem: Tiller is a hard man to find, let alone intimidate. After more than a decade as one of the anti-abortion movement's favorite targets, he keeps a low profile, drives an armored car and lives in a gated community in a house with a state-of-the-art security system. More pointedly, he has made it clear that he's not susceptible to scare tactics. In 1993, Tiller was shot in both arms by an anti-abortion protester. He returned to work the next day.

Newman is well aware of Tiller's resilience. That's why Operation Rescue is going after clinic workers like [clinic's administrative assistant] Sara Phares. The employees have no guards posted at their homes, no cameras monitoring their yards. If Newman can provoke enough of them to quit, his job will be done. He'll effectively shut Tiller down."