Let's take a step back here:
Do you believe that this is a Conservative website, or a Libertarian one? If you believe it is the former, why would you be debefending the free speech of NARL activists?
Last I heard, this was FREE Republic, where the general belief system involves supporting the U.S. Constitution, which carries a pretty clear right to FREE speech. Anti-abortion activists also have a right to free speech, which they exercise regularly on college campuses and elsewhere. What clause of the Constitution do you think provides for the exclusion of NARAL and its supporters from the protections of the First Amendment?