The children are innocent. Tiller was not.
Law embraces the notion of defending a third party. Should the shooter have waited until Tiller was "in the act"? Rather absurd. Tiller was bound to murder again.
Maybe Tiller should have been snatched and held someplace where he could not repeat his atrocities. I'm sure this suggestion, too, would be dismissed as a violation of law.
There are sins of commission and sins of omission. If people truly believe that abortion is murder, then not stopping the murder is to be complicit.
Who would not rejoice in the death of an Adolph Hitler, Joseph Stalin, Pol Pot, ...
I like that.
No doubt he had a full day of abortions to do on Monday morning.