A quick skim through the left-wing blogosphere reveals many trying to blame Bill O'Reilly, the pro-life movement, or even conservatives & the right in general for the murder of Dr. Tiller. There are also ridiculous attempts to draw some kind of equivalence between this killing and radical Islamic terrorism, as if abortion providers were being gunned down every day -- rather than once every ten years or so.
Whenever some sort of crazy killing takes place, there are always people looking for someone or something to blame -- whether it's inanimate objects like guns or books, television or video games, music, or some other factor or person loosely connected in some way to the killer. But lunatics who kill people do not need outside forces. They always find reasons for murder. Unless he had accomplices, the only person responsible for this murder was the actual killer.
The killer was willing to to walk into a church full of people and murder someone in cold blood. He did this almost certainly knowing that he would be caught. People don't do things like that because they watched a tv show. They do it because they live in their own little world where the killing makes sense.