Lincoln was a corporate lawyer who saw slavery as a direct assault on a free market that he believed allowed anyone to rise to wealth through hard work alone. Hardly the SJW you all fetishize him as.
Eh, he did represent corporations, but there was hardly a developed system of corporate lawyers that we see today. He also represented murderers and criminals, like any lawyer. That's kind of what they do, it doesn't mean they love everyone they represent.
And he was a social justice warrior in the sense that he wanted to fight for underprivileged people. Modern SJWs are largely teenagers with no life experience, so it would actually be a slur to call him that.
Unrelated, but he was also one of the divorce lawyers for a couple of my ancestors.