There is terrible wrong and injustice in the Holocaust or slavery or the other evil things you mention. There may be sinfulness as well. But is there Thomism as Thomism thinks there is? 


In the end--although we are largely in agreement--you want me to think Thomistically--and want to call me not thinking Thomistically as just a preference in semantics. That's okay for you to say, and I understand the need to say it, but it isn't my perspective. Thomists tend to deconstruct without reconstruction, and, in the process, lose the meaning. By the time they are finished, the "subjective" is unimportant, peripheral, weak, modern, and silly. But without it there is nothing to talk about, however, because without all that personal stuff, we are no longer human. And Jesus became human, not a human representation of a Thomist first principle. Jesus says that we reach God through him, a Person. Again, Thomism is fine if it actually helps you think, but it is no prerequisite to anything else.