It is ironic that someone can claim the high ground in a war, while they are protecting their state's right to enslave other humans.
I believe states had a right to break away, but there was enough immorality to go around.
BTW I have no problem attacking civilan centers during war. People are ultimately responsible for their government.
I think that is the beginning of a slippery slope. In my own view, wars are generally between governments of nations, not peoples of nations. And I don't care how much they mouth the word "democracy", our government is not us.