It's a false dilemma: PICK THE LESSER OF TWO EVILS. Except, here, it's pick the greater good.
I pick no evil. I pick the good - because it is the same good.
I mean, it seems to make sense to focus our energies on whatever is most urgent: abortion, euthanasia, the death penalty (though some would say even THAT is controversial). And some people are called to speak out about the truth of the human person via a particular charism - the Sisters of Life, Talitha Kum, and so on, come to mind. There are times when these issues must to be emphasized SO MUCH WAY MORE - i.e. during an election.
On the other hand, where do you find time for all the rest of the issues? The ones that kill --- but not as many? The ones that dehumanize and rob of dignity --- but still leave you breathing. Things like racism, human trafficking, systemic injustice/oppression, homelessness, healthcare, etc.
I *get* that we have limited energy, so we tend to fight what is most egregious and obvious: the ending of innocent human life at its most vulnerable stage.
But if it's not good to focus our energies on other issues now then when?
And are these issues even taken seriously by the more vocal segment of pro-lifers who have a wide reach?
The first question is rhetorical.
As regards the second question, my experience is mixed - and it is just that: my own limited experience with a defined set of people or speakers/writers/figures. I suspect it may be a broader problem, tho, and it's certainly an impression held by many folk who are not pro-life. (Though, for some, it seems nothing more than a talking point kept in a back-pocket, as a sort of "aha-gotcha-there!" instead of an actual conviction.) Whether that impression is true or not is a separate question.
There's a reluctance to address racism (for example) because there is conflation with political parties and their ideologies. With that comes a fear, on some speakers' part, of losing followers who do not, cannot, or refuse to make finer distinctions. So you don't raise those other issues: they are perceived as divisive and detrimental to the urgent message against abortion. For other speakers (writers/figures), the issue and the party are perceived as inseparable and they spread that view to others. Don't ruffle feathers! Or - don't align yourself with them on some issue because WE are right and THEY are wrong so they are also wrong on THIS. The more disingenuous cynically use pro-life speak as a political tool only.
Part of it is lack of personally knowing those who are affected and being able to empathize with an individual instead of an amorphous concept. We have trouble helping others or recognizing how pressing an issue is when we aren't confronted, face-to-face, by their pain - when it is not made real, concrete, and present to us. The unseen and unheard are easier to dismiss.
These acts of violence all have the same root: denial of the truth of the human person.
Here's the thing: speaking out against racism/torture/discrimination/etc. doesn't dilute the message against abortion. It strengthens it. Speaking out against any issue that is contrary to human dignity makes your position far more credible to others and those who disagree are more likely to listen to you when you try to tell them about the sanctity of life in the womb. If you are there for your neighbor, others can see what motivates you is a thoroughgoing conviction regarding human dignity, that there is integrity of thought.
And these things need to be said because they are the truth and we are to be witnesses to truth: that there are no categories of human persons more deserving of dignity, of humane treatment. The convict, the child in the womb, the illegal immigrant - all loved by Christ, all formed in His image, all deserving of having that fundamental reality recognized even prior to talk about what such persons have or have not done (i.e., their state of innocence). These are our brothers and sisters.
Pointing out that others have glaring gaps of reasoning and lack intellectual integrity is no justification to ignore those other issues. STOP BEING SO DEFENSIVE AND GET YOUR OWN ACT TOGETHER.