Take the issue of aid for foreign refugees for example. One angry protestor at our outreach was shouting "I'll bet you aren't helping any refugee kids! And you call yourselves 'pro-life'!"
The problem with highlighting these "inconsistencies" is that in many (if not all) cases abortion is not entirely parallel with the other issue being mentioned. For example, here is the pro-life argument, in a syllogism (a formal argument):
Premise 1: It is wrong to intentionally kill an innocent human being.
Premise 2: Abortion intentionally kills an innocent human being.
Conclusion: Therefore, abortion is wrong.Since the question "Does abortion kill a human being?" can be answered through the science of embryology by determining whether or not there is a human being present in the womb during abortion, then anyone who objects to this argument must use the science of embryology and fetology to answer that question. Similarly, they must also use philosophy and moral reasoning to demonstrate (conclusively) why any difference between two separate human beings can be used to justify killing one but not the other, and why that particular difference is the one we should acknowledge, both in our laws and our moral decision making.
The problem with comparing other social issues to abortion and thus calling those who oppose abortion "inconsistent" is that many of the issues that are typically mentioned tend not to be an issue over who or what we are going to purposely kill. In fact, many are just the opposite. For example, the debate over giving aid and shelter to foreign refugees is not about whether or not it is morally permissible to kill refugees seeking asylum in the U.S. (If it was, those opposed to abortion would most assuredly speak out against the act). Rather, it concerns what the best way the U.S. government should provide aid to foreign refugees while also maintaining the security and safety of American citizens.
Likewise, attacking pro-life conservatives for calling themselves "pro-life" while taking a non-Leftwing stance on the healthcare issue is just as absurd. Republicans who oppose abortion are not opposing socialized healthcare because they are trying to kill those who "need" socialized healthcare; rather, they do so because they think there are better alternatives. The debate over healthcare is how to fix a damaged system in the most effective and moral way possible.
Instead of arguing for why abortion is permissible, the abortion-choicer just engages in a lazy Ad Hominem slander of those they disagree with. Even if the slander happens to be true, if the argument against abortion succeeds, then anyone committed to truth and moral goodness should oppose abortion.