In the past, AHA has said it eschews violence. But it recently posted this:
"What Christ says is to love my neighbor as I love myself. If someone were coming to kill you, you would do more than stand up and shout, 'Help!'. If someone were trying to kill you, you would oppose them with everything you have, because you love yourself. I ask that you think in those terms when you consider the pre-born child who is slated to die."
What is this if not an open incitement to violence? It's an argument from analogy. It considers verbal dissuasion inadequate. Rather, you'd oppose the assailant with whatever you've got.
It presumes the right of self-defense, then extends that principle to protection of the unborn. According to the right of self-defense, you're entitled to use violent means, up to and including lethal force, if necessary, to protect yourself from being killed or maimed by wrongful aggression.
By parity of argument, that's permissible and, indeed, obligatory, in defense of your neighbor (i.e. unborn babies).
Moreover, protecting the unborn by the same means you'd use to defend yourself can't be qualified without destroying the analogy, which is the basis of the argument.