In short, then, you don't share my views that abortion constitutes the destruction of innocent human life.  Thus you are pro-abortion.  You are right--we have no basis for discussion on this matter then.

Indeed, if abortion does not constitute murder, there is no reason why it should be forbidden.  It is nothing more than a medical procedure.  There is no reason it should be compared to the Holocaust either.  The source of our disagreement on this issue then is the status of the Fetus.  

As for lending support to a loose cannon who is a threat to civilization itself--I don't recall the Church lending support to Hilary Clinton.   Do you?