If you start with the premise that abortion is an intrinsic evil, then it’s not a huge leap to believe that anyone who supports it is evil. Catholics also believe (at least they’re supposed to) in Transubstantiation. Do we think that those who do not are evil? The idea that all abortion = murder and that all abortion is an intrinsic evil is a belief of the Catholic Church. It is NOT a belief of other major world religions. Are adherents of those other religions “evil” because they believe the teachings of their own religions? You may firmly believe they are mistaken, wrong, etc. but are they obeying their own consciences? Would you deny them religious freedom? What about those who think abortion is wrong, but are more concerned with other issues? Are they also evil?
Pope Francis has something to say on the issue:
“Gaudete et Exsultate”, 2018–§101–(in full) “The other harmful ideological error is found in those who find suspect the social engagement of others, seeing it as superficial, worldly, secular, materialist, communist or populist. Or they relativize it, as if there are other more important matters, or the only thing that counts is one particular ethical issue or cause that they themselves defend. Our defence of the innocent unborn, for example, needs to be clear, firm and passionate, for at stake is the dignity of a human life, which is always sacred and demands love for each person, regardless of his or her stage of development. Equally sacred, however, are the lives of the poor, those already born, the destitute, the abandoned and the underprivileged, the vulnerable infirm and elderly exposed to covert euthanasia, the victims of human trafficking, new forms of slavery, and every form of rejection. We cannot uphold an ideal of holiness that would ignore injustice in a world where some revel, spend with abandon and live only for the latest consumer goods, even as others look on from afar, living their entire lives in abject poverty.”
And §102-- “We often hear it said that, with respect to relativism and the flaws of our present world, the situation of migrants, for example, is a lesser issue. Some Catholics consider it a secondary issue compared to the “grave” bioethical questions. That a politician looking for votes might say such a thing is understandable, but not a Christian…”