There has been what- 8 people associated with abprtion clinics who have been killed for that asdociation? I have found no indication that any church or church leadership was behind it or endorsed it or encouraged it either.
The Klan never was a church either. Of course christians made up the KKK and they attempted to use the bible yo justify their hatred but i do not exactly think it is the same.
Westboro is interesting though. As vile and insane as they were, they never advocated violence.
I think you missed an operative statement the parent made. "And try to kill in the name of". While the KKK might fit in there, or maybe at one time they would have, its only the idiots who try to kill in the name of that could be comparable.
So this excludes westboro. Would include a number of but not all klansmen, and about five anti abortionist in the US. I think you missed the limiter he put there "kill in the name off".